// Copyright 2021 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Generated by the Codegen C++ plugin.
// If you make any local changes, they will be lost.
// source: google/bigtable/admin/v2/bigtable_instance_admin.proto

#ifndef GOOGLE_CLOUD_CPP_GOOGLE_CLOUD_BIGTABLE_ADMIN_BIGTABLE_INSTANCE_ADMIN_CLIENT_H
#define GOOGLE_CLOUD_CPP_GOOGLE_CLOUD_BIGTABLE_ADMIN_BIGTABLE_INSTANCE_ADMIN_CLIENT_H

#include "google/cloud/bigtable/admin/bigtable_instance_admin_connection.h"
#include "google/cloud/future.h"
#include "google/cloud/iam_updater.h"
#include "google/cloud/internal/make_status.h"
#include "google/cloud/no_await_tag.h"
#include "google/cloud/options.h"
#include "google/cloud/polling_policy.h"
#include "google/cloud/status_or.h"
#include "google/cloud/version.h"
#include <google/longrunning/operations.grpc.pb.h>
#include <map>
#include <memory>
#include <string>

namespace google {
namespace cloud {
namespace bigtable_admin {
GOOGLE_CLOUD_CPP_INLINE_NAMESPACE_BEGIN

///
/// Service for creating, configuring, and deleting Cloud Bigtable Instances and
/// Clusters. Provides access to the Instance and Cluster schemas only, not the
/// tables' metadata or data stored in those tables.
///
/// @par Equality
///
/// Instances of this class created via copy-construction or copy-assignment
/// always compare equal. Instances created with equal
/// `std::shared_ptr<*Connection>` objects compare equal. Objects that compare
/// equal share the same underlying resources.
///
/// @par Performance
///
/// Creating a new instance of this class is a relatively expensive operation,
/// new objects establish new connections to the service. In contrast,
/// copy-construction, move-construction, and the corresponding assignment
/// operations are relatively efficient as the copies share all underlying
/// resources.
///
/// @par Thread Safety
///
/// Concurrent access to different instances of this class, even if they compare
/// equal, is guaranteed to work. Two or more threads operating on the same
/// instance of this class is not guaranteed to work. Since copy-construction
/// and move-construction is a relatively efficient operation, consider using
/// such a copy when using this class from multiple threads.
///
class BigtableInstanceAdminClient {
 public:
  explicit BigtableInstanceAdminClient(
      std::shared_ptr<BigtableInstanceAdminConnection> connection,
      Options opts = {});
  ~BigtableInstanceAdminClient();

  ///@{
  /// @name Copy and move support
  BigtableInstanceAdminClient(BigtableInstanceAdminClient const&) = default;
  BigtableInstanceAdminClient& operator=(BigtableInstanceAdminClient const&) =
      default;
  BigtableInstanceAdminClient(BigtableInstanceAdminClient&&) = default;
  BigtableInstanceAdminClient& operator=(BigtableInstanceAdminClient&&) =
      default;
  ///@}

  ///@{
  /// @name Equality
  friend bool operator==(BigtableInstanceAdminClient const& a,
                         BigtableInstanceAdminClient const& b) {
    return a.connection_ == b.connection_;
  }
  friend bool operator!=(BigtableInstanceAdminClient const& a,
                         BigtableInstanceAdminClient const& b) {
    return !(a == b);
  }
  ///@}

  // clang-format off
  ///
  /// Create an instance within a project.
  ///
  /// Note that exactly one of Cluster.serve_nodes and
  /// Cluster.cluster_config.cluster_autoscaling_config can be set. If
  /// serve_nodes is set to non-zero, then the cluster is manually scaled. If
  /// cluster_config.cluster_autoscaling_config is non-empty, then autoscaling is
  /// enabled.
  ///
  /// @param parent  Required. The unique name of the project in which to create the new
  ///  instance. Values are of the form `projects/{project}`.
  /// @param instance_id  Required. The ID to be used when referring to the new instance within its
  ///  project, e.g., just `myinstance` rather than
  ///  `projects/myproject/instances/myinstance`.
  /// @param instance  Required. The instance to create.
  ///  Fields marked `OutputOnly` must be left blank.
  /// @param clusters  Required. The clusters to be created within the instance, mapped by desired
  ///  cluster ID, e.g., just `mycluster` rather than
  ///  `projects/myproject/instances/myinstance/clusters/mycluster`.
  ///  Fields marked `OutputOnly` must be left blank.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return A [`future`] that becomes satisfied when the LRO
  ///     ([Long Running Operation]) completes or the polling policy in effect
  ///     for this call is exhausted. The future is satisfied with an error if
  ///     the LRO completes with an error or the polling policy is exhausted.
  ///     In this case the [`StatusOr`] returned by the future contains the
  ///     error. If the LRO completes successfully the value of the future
  ///     contains the LRO's result. For this RPC the result is a
  ///     [google.bigtable.admin.v2.Instance] proto message.
  ///     The C++ class representing this message is created by Protobuf, using
  ///     the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [Long Running Operation]: https://google.aip.dev/151
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.CreateInstanceRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L436}
  /// [google.bigtable.admin.v2.Instance]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L40}
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::Instance>> CreateInstance(
      std::string const& parent, std::string const& instance_id,
      google::bigtable::admin::v2::Instance const& instance,
      std::map<std::string, google::bigtable::admin::v2::Cluster> const&
          clusters,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief CreateInstance
  ///
  /// Specifying the [`NoAwaitTag`] immediately returns the
  /// [`google::longrunning::Operation`] that corresponds to the Long Running
  /// Operation that has been started. No polling for operation status occurs.
  ///
  /// [`NoAwaitTag`]: @ref google::cloud::NoAwaitTag
  ///
  // clang-format on
  StatusOr<google::longrunning::Operation> CreateInstance(
      NoAwaitTag, std::string const& parent, std::string const& instance_id,
      google::bigtable::admin::v2::Instance const& instance,
      std::map<std::string, google::bigtable::admin::v2::Cluster> const&
          clusters,
      Options opts = {});

  // clang-format off
  ///
  /// Create an instance within a project.
  ///
  /// Note that exactly one of Cluster.serve_nodes and
  /// Cluster.cluster_config.cluster_autoscaling_config can be set. If
  /// serve_nodes is set to non-zero, then the cluster is manually scaled. If
  /// cluster_config.cluster_autoscaling_config is non-empty, then autoscaling is
  /// enabled.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.CreateInstanceRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return A [`future`] that becomes satisfied when the LRO
  ///     ([Long Running Operation]) completes or the polling policy in effect
  ///     for this call is exhausted. The future is satisfied with an error if
  ///     the LRO completes with an error or the polling policy is exhausted.
  ///     In this case the [`StatusOr`] returned by the future contains the
  ///     error. If the LRO completes successfully the value of the future
  ///     contains the LRO's result. For this RPC the result is a
  ///     [google.bigtable.admin.v2.Instance] proto message.
  ///     The C++ class representing this message is created by Protobuf, using
  ///     the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [Long Running Operation]: https://google.aip.dev/151
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.CreateInstanceRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L436}
  /// [google.bigtable.admin.v2.Instance]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L40}
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::Instance>> CreateInstance(
      google::bigtable::admin::v2::CreateInstanceRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief CreateInstance
  ///
  /// Specifying the [`NoAwaitTag`] immediately returns the
  /// [`google::longrunning::Operation`] that corresponds to the Long Running
  /// Operation that has been started. No polling for operation status occurs.
  ///
  /// [`NoAwaitTag`]: @ref google::cloud::NoAwaitTag
  ///
  // clang-format on
  StatusOr<google::longrunning::Operation> CreateInstance(
      NoAwaitTag,
      google::bigtable::admin::v2::CreateInstanceRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief CreateInstance
  ///
  /// This method accepts a `google::longrunning::Operation` that corresponds
  /// to a previously started Long Running Operation (LRO) and polls the status
  /// of the LRO in the background.
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::Instance>> CreateInstance(
      google::longrunning::Operation const& operation, Options opts = {});

  // clang-format off
  ///
  /// Gets information about an instance.
  ///
  /// @param name  Required. The unique name of the requested instance. Values are of the form
  ///  `projects/{project}/instances/{instance}`.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.bigtable.admin.v2.Instance])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.GetInstanceRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L463}
  /// [google.bigtable.admin.v2.Instance]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L40}
  ///
  // clang-format on
  StatusOr<google::bigtable::admin::v2::Instance> GetInstance(
      std::string const& name, Options opts = {});

  // clang-format off
  ///
  /// Gets information about an instance.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.GetInstanceRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.bigtable.admin.v2.Instance])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.GetInstanceRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L463}
  /// [google.bigtable.admin.v2.Instance]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L40}
  ///
  // clang-format on
  StatusOr<google::bigtable::admin::v2::Instance> GetInstance(
      google::bigtable::admin::v2::GetInstanceRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// Lists information about instances in a project.
  ///
  /// @param parent  Required. The unique name of the project for which a list of instances is
  ///  requested. Values are of the form `projects/{project}`.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.bigtable.admin.v2.ListInstancesResponse])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.ListInstancesRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L475}
  /// [google.bigtable.admin.v2.ListInstancesResponse]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L490}
  ///
  // clang-format on
  StatusOr<google::bigtable::admin::v2::ListInstancesResponse> ListInstances(
      std::string const& parent, Options opts = {});

  // clang-format off
  ///
  /// Lists information about instances in a project.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.ListInstancesRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.bigtable.admin.v2.ListInstancesResponse])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.ListInstancesRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L475}
  /// [google.bigtable.admin.v2.ListInstancesResponse]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L490}
  ///
  // clang-format on
  StatusOr<google::bigtable::admin::v2::ListInstancesResponse> ListInstances(
      google::bigtable::admin::v2::ListInstancesRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// Updates an instance within a project. This method updates only the display
  /// name and type for an Instance. To update other Instance properties, such as
  /// labels, use PartialUpdateInstance.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.Instance].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.bigtable.admin.v2.Instance])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.Instance]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L40}
  ///
  // clang-format on
  StatusOr<google::bigtable::admin::v2::Instance> UpdateInstance(
      google::bigtable::admin::v2::Instance const& request, Options opts = {});

  // clang-format off
  ///
  /// Partially updates an instance within a project. This method can modify all
  /// fields of an Instance and is the preferred way to update an Instance.
  ///
  /// @param instance  Required. The Instance which will (partially) replace the current value.
  /// @param update_mask  Required. The subset of Instance fields which should be replaced.
  ///  Must be explicitly set.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return A [`future`] that becomes satisfied when the LRO
  ///     ([Long Running Operation]) completes or the polling policy in effect
  ///     for this call is exhausted. The future is satisfied with an error if
  ///     the LRO completes with an error or the polling policy is exhausted.
  ///     In this case the [`StatusOr`] returned by the future contains the
  ///     error. If the LRO completes successfully the value of the future
  ///     contains the LRO's result. For this RPC the result is a
  ///     [google.bigtable.admin.v2.Instance] proto message.
  ///     The C++ class representing this message is created by Protobuf, using
  ///     the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [Long Running Operation]: https://google.aip.dev/151
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.Instance]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L40}
  /// [google.bigtable.admin.v2.PartialUpdateInstanceRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L507}
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::Instance>> PartialUpdateInstance(
      google::bigtable::admin::v2::Instance const& instance,
      google::protobuf::FieldMask const& update_mask, Options opts = {});

  // clang-format off
  ///
  /// @copybrief PartialUpdateInstance
  ///
  /// Specifying the [`NoAwaitTag`] immediately returns the
  /// [`google::longrunning::Operation`] that corresponds to the Long Running
  /// Operation that has been started. No polling for operation status occurs.
  ///
  /// [`NoAwaitTag`]: @ref google::cloud::NoAwaitTag
  ///
  // clang-format on
  StatusOr<google::longrunning::Operation> PartialUpdateInstance(
      NoAwaitTag, google::bigtable::admin::v2::Instance const& instance,
      google::protobuf::FieldMask const& update_mask, Options opts = {});

  // clang-format off
  ///
  /// Partially updates an instance within a project. This method can modify all
  /// fields of an Instance and is the preferred way to update an Instance.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.PartialUpdateInstanceRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return A [`future`] that becomes satisfied when the LRO
  ///     ([Long Running Operation]) completes or the polling policy in effect
  ///     for this call is exhausted. The future is satisfied with an error if
  ///     the LRO completes with an error or the polling policy is exhausted.
  ///     In this case the [`StatusOr`] returned by the future contains the
  ///     error. If the LRO completes successfully the value of the future
  ///     contains the LRO's result. For this RPC the result is a
  ///     [google.bigtable.admin.v2.Instance] proto message.
  ///     The C++ class representing this message is created by Protobuf, using
  ///     the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [Long Running Operation]: https://google.aip.dev/151
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.Instance]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L40}
  /// [google.bigtable.admin.v2.PartialUpdateInstanceRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L507}
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::Instance>> PartialUpdateInstance(
      google::bigtable::admin::v2::PartialUpdateInstanceRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief PartialUpdateInstance
  ///
  /// Specifying the [`NoAwaitTag`] immediately returns the
  /// [`google::longrunning::Operation`] that corresponds to the Long Running
  /// Operation that has been started. No polling for operation status occurs.
  ///
  /// [`NoAwaitTag`]: @ref google::cloud::NoAwaitTag
  ///
  // clang-format on
  StatusOr<google::longrunning::Operation> PartialUpdateInstance(
      NoAwaitTag,
      google::bigtable::admin::v2::PartialUpdateInstanceRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief PartialUpdateInstance
  ///
  /// This method accepts a `google::longrunning::Operation` that corresponds
  /// to a previously started Long Running Operation (LRO) and polls the status
  /// of the LRO in the background.
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::Instance>> PartialUpdateInstance(
      google::longrunning::Operation const& operation, Options opts = {});

  // clang-format off
  ///
  /// Delete an instance from a project.
  ///
  /// @param name  Required. The unique name of the instance to be deleted.
  ///  Values are of the form `projects/{project}/instances/{instance}`.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return a [`Status`] object. If the request failed, the
  ///     status contains the details of the failure.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.DeleteInstanceRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L518}
  ///
  // clang-format on
  Status DeleteInstance(std::string const& name, Options opts = {});

  // clang-format off
  ///
  /// Delete an instance from a project.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.DeleteInstanceRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return a [`Status`] object. If the request failed, the
  ///     status contains the details of the failure.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.DeleteInstanceRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L518}
  ///
  // clang-format on
  Status DeleteInstance(
      google::bigtable::admin::v2::DeleteInstanceRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// Creates a cluster within an instance.
  ///
  /// Note that exactly one of Cluster.serve_nodes and
  /// Cluster.cluster_config.cluster_autoscaling_config can be set. If
  /// serve_nodes is set to non-zero, then the cluster is manually scaled. If
  /// cluster_config.cluster_autoscaling_config is non-empty, then autoscaling is
  /// enabled.
  ///
  /// @param parent  Required. The unique name of the instance in which to create the new
  ///  cluster. Values are of the form `projects/{project}/instances/{instance}`.
  /// @param cluster_id  Required. The ID to be used when referring to the new cluster within its
  ///  instance, e.g., just `mycluster` rather than
  ///  `projects/myproject/instances/myinstance/clusters/mycluster`.
  /// @param cluster  Required. The cluster to be created.
  ///  Fields marked `OutputOnly` must be left blank.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return A [`future`] that becomes satisfied when the LRO
  ///     ([Long Running Operation]) completes or the polling policy in effect
  ///     for this call is exhausted. The future is satisfied with an error if
  ///     the LRO completes with an error or the polling policy is exhausted.
  ///     In this case the [`StatusOr`] returned by the future contains the
  ///     error. If the LRO completes successfully the value of the future
  ///     contains the LRO's result. For this RPC the result is a
  ///     [google.bigtable.admin.v2.Cluster] proto message.
  ///     The C++ class representing this message is created by Protobuf, using
  ///     the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [Long Running Operation]: https://google.aip.dev/151
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.Cluster]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L163}
  /// [google.bigtable.admin.v2.CreateClusterRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L530}
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::Cluster>> CreateCluster(
      std::string const& parent, std::string const& cluster_id,
      google::bigtable::admin::v2::Cluster const& cluster, Options opts = {});

  // clang-format off
  ///
  /// @copybrief CreateCluster
  ///
  /// Specifying the [`NoAwaitTag`] immediately returns the
  /// [`google::longrunning::Operation`] that corresponds to the Long Running
  /// Operation that has been started. No polling for operation status occurs.
  ///
  /// [`NoAwaitTag`]: @ref google::cloud::NoAwaitTag
  ///
  // clang-format on
  StatusOr<google::longrunning::Operation> CreateCluster(
      NoAwaitTag, std::string const& parent, std::string const& cluster_id,
      google::bigtable::admin::v2::Cluster const& cluster, Options opts = {});

  // clang-format off
  ///
  /// Creates a cluster within an instance.
  ///
  /// Note that exactly one of Cluster.serve_nodes and
  /// Cluster.cluster_config.cluster_autoscaling_config can be set. If
  /// serve_nodes is set to non-zero, then the cluster is manually scaled. If
  /// cluster_config.cluster_autoscaling_config is non-empty, then autoscaling is
  /// enabled.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.CreateClusterRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return A [`future`] that becomes satisfied when the LRO
  ///     ([Long Running Operation]) completes or the polling policy in effect
  ///     for this call is exhausted. The future is satisfied with an error if
  ///     the LRO completes with an error or the polling policy is exhausted.
  ///     In this case the [`StatusOr`] returned by the future contains the
  ///     error. If the LRO completes successfully the value of the future
  ///     contains the LRO's result. For this RPC the result is a
  ///     [google.bigtable.admin.v2.Cluster] proto message.
  ///     The C++ class representing this message is created by Protobuf, using
  ///     the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [Long Running Operation]: https://google.aip.dev/151
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.Cluster]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L163}
  /// [google.bigtable.admin.v2.CreateClusterRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L530}
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::Cluster>> CreateCluster(
      google::bigtable::admin::v2::CreateClusterRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief CreateCluster
  ///
  /// Specifying the [`NoAwaitTag`] immediately returns the
  /// [`google::longrunning::Operation`] that corresponds to the Long Running
  /// Operation that has been started. No polling for operation status occurs.
  ///
  /// [`NoAwaitTag`]: @ref google::cloud::NoAwaitTag
  ///
  // clang-format on
  StatusOr<google::longrunning::Operation> CreateCluster(
      NoAwaitTag,
      google::bigtable::admin::v2::CreateClusterRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief CreateCluster
  ///
  /// This method accepts a `google::longrunning::Operation` that corresponds
  /// to a previously started Long Running Operation (LRO) and polls the status
  /// of the LRO in the background.
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::Cluster>> CreateCluster(
      google::longrunning::Operation const& operation, Options opts = {});

  // clang-format off
  ///
  /// Gets information about a cluster.
  ///
  /// @param name  Required. The unique name of the requested cluster. Values are of the form
  ///  `projects/{project}/instances/{instance}/clusters/{cluster}`.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.bigtable.admin.v2.Cluster])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.Cluster]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L163}
  /// [google.bigtable.admin.v2.GetClusterRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L551}
  ///
  // clang-format on
  StatusOr<google::bigtable::admin::v2::Cluster> GetCluster(
      std::string const& name, Options opts = {});

  // clang-format off
  ///
  /// Gets information about a cluster.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.GetClusterRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.bigtable.admin.v2.Cluster])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.Cluster]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L163}
  /// [google.bigtable.admin.v2.GetClusterRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L551}
  ///
  // clang-format on
  StatusOr<google::bigtable::admin::v2::Cluster> GetCluster(
      google::bigtable::admin::v2::GetClusterRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// Lists information about clusters in an instance.
  ///
  /// @param parent  Required. The unique name of the instance for which a list of clusters is
  ///  requested. Values are of the form
  ///  `projects/{project}/instances/{instance}`. Use `{instance} = "-"` to list
  ///  Clusters for all Instances in a project, e.g.,
  ///  `projects/myproject/instances/-`.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.bigtable.admin.v2.ListClustersResponse])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.ListClustersRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L563}
  /// [google.bigtable.admin.v2.ListClustersResponse]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L581}
  ///
  // clang-format on
  StatusOr<google::bigtable::admin::v2::ListClustersResponse> ListClusters(
      std::string const& parent, Options opts = {});

  // clang-format off
  ///
  /// Lists information about clusters in an instance.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.ListClustersRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.bigtable.admin.v2.ListClustersResponse])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.ListClustersRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L563}
  /// [google.bigtable.admin.v2.ListClustersResponse]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L581}
  ///
  // clang-format on
  StatusOr<google::bigtable::admin::v2::ListClustersResponse> ListClusters(
      google::bigtable::admin::v2::ListClustersRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// Updates a cluster within an instance.
  ///
  /// Note that UpdateCluster does not support updating
  /// cluster_config.cluster_autoscaling_config. In order to update it, you
  /// must use PartialUpdateCluster.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.Cluster].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return A [`future`] that becomes satisfied when the LRO
  ///     ([Long Running Operation]) completes or the polling policy in effect
  ///     for this call is exhausted. The future is satisfied with an error if
  ///     the LRO completes with an error or the polling policy is exhausted.
  ///     In this case the [`StatusOr`] returned by the future contains the
  ///     error. If the LRO completes successfully the value of the future
  ///     contains the LRO's result. For this RPC the result is a
  ///     [google.bigtable.admin.v2.Cluster] proto message.
  ///     The C++ class representing this message is created by Protobuf, using
  ///     the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [Long Running Operation]: https://google.aip.dev/151
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.Cluster]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L163}
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::Cluster>> UpdateCluster(
      google::bigtable::admin::v2::Cluster const& request, Options opts = {});

  // clang-format off
  ///
  /// @copybrief UpdateCluster
  ///
  /// Specifying the [`NoAwaitTag`] immediately returns the
  /// [`google::longrunning::Operation`] that corresponds to the Long Running
  /// Operation that has been started. No polling for operation status occurs.
  ///
  /// [`NoAwaitTag`]: @ref google::cloud::NoAwaitTag
  ///
  // clang-format on
  StatusOr<google::longrunning::Operation> UpdateCluster(
      NoAwaitTag, google::bigtable::admin::v2::Cluster const& request,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief UpdateCluster
  ///
  /// This method accepts a `google::longrunning::Operation` that corresponds
  /// to a previously started Long Running Operation (LRO) and polls the status
  /// of the LRO in the background.
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::Cluster>> UpdateCluster(
      google::longrunning::Operation const& operation, Options opts = {});

  // clang-format off
  ///
  /// Partially updates a cluster within a project. This method is the preferred
  /// way to update a Cluster.
  ///
  /// To enable and update autoscaling, set
  /// cluster_config.cluster_autoscaling_config. When autoscaling is enabled,
  /// serve_nodes is treated as an OUTPUT_ONLY field, meaning that updates to it
  /// are ignored. Note that an update cannot simultaneously set serve_nodes to
  /// non-zero and cluster_config.cluster_autoscaling_config to non-empty, and
  /// also specify both in the update_mask.
  ///
  /// To disable autoscaling, clear cluster_config.cluster_autoscaling_config,
  /// and explicitly set a serve_node count via the update_mask.
  ///
  /// @param cluster  Required. The Cluster which contains the partial updates to be applied,
  ///  subject to the update_mask.
  /// @param update_mask  Required. The subset of Cluster fields which should be replaced.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return A [`future`] that becomes satisfied when the LRO
  ///     ([Long Running Operation]) completes or the polling policy in effect
  ///     for this call is exhausted. The future is satisfied with an error if
  ///     the LRO completes with an error or the polling policy is exhausted.
  ///     In this case the [`StatusOr`] returned by the future contains the
  ///     error. If the LRO completes successfully the value of the future
  ///     contains the LRO's result. For this RPC the result is a
  ///     [google.bigtable.admin.v2.Cluster] proto message.
  ///     The C++ class representing this message is created by Protobuf, using
  ///     the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [Long Running Operation]: https://google.aip.dev/151
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.Cluster]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L163}
  /// [google.bigtable.admin.v2.PartialUpdateClusterRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L710}
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::Cluster>> PartialUpdateCluster(
      google::bigtable::admin::v2::Cluster const& cluster,
      google::protobuf::FieldMask const& update_mask, Options opts = {});

  // clang-format off
  ///
  /// @copybrief PartialUpdateCluster
  ///
  /// Specifying the [`NoAwaitTag`] immediately returns the
  /// [`google::longrunning::Operation`] that corresponds to the Long Running
  /// Operation that has been started. No polling for operation status occurs.
  ///
  /// [`NoAwaitTag`]: @ref google::cloud::NoAwaitTag
  ///
  // clang-format on
  StatusOr<google::longrunning::Operation> PartialUpdateCluster(
      NoAwaitTag, google::bigtable::admin::v2::Cluster const& cluster,
      google::protobuf::FieldMask const& update_mask, Options opts = {});

  // clang-format off
  ///
  /// Partially updates a cluster within a project. This method is the preferred
  /// way to update a Cluster.
  ///
  /// To enable and update autoscaling, set
  /// cluster_config.cluster_autoscaling_config. When autoscaling is enabled,
  /// serve_nodes is treated as an OUTPUT_ONLY field, meaning that updates to it
  /// are ignored. Note that an update cannot simultaneously set serve_nodes to
  /// non-zero and cluster_config.cluster_autoscaling_config to non-empty, and
  /// also specify both in the update_mask.
  ///
  /// To disable autoscaling, clear cluster_config.cluster_autoscaling_config,
  /// and explicitly set a serve_node count via the update_mask.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.PartialUpdateClusterRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return A [`future`] that becomes satisfied when the LRO
  ///     ([Long Running Operation]) completes or the polling policy in effect
  ///     for this call is exhausted. The future is satisfied with an error if
  ///     the LRO completes with an error or the polling policy is exhausted.
  ///     In this case the [`StatusOr`] returned by the future contains the
  ///     error. If the LRO completes successfully the value of the future
  ///     contains the LRO's result. For this RPC the result is a
  ///     [google.bigtable.admin.v2.Cluster] proto message.
  ///     The C++ class representing this message is created by Protobuf, using
  ///     the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [Long Running Operation]: https://google.aip.dev/151
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.Cluster]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L163}
  /// [google.bigtable.admin.v2.PartialUpdateClusterRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L710}
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::Cluster>> PartialUpdateCluster(
      google::bigtable::admin::v2::PartialUpdateClusterRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief PartialUpdateCluster
  ///
  /// Specifying the [`NoAwaitTag`] immediately returns the
  /// [`google::longrunning::Operation`] that corresponds to the Long Running
  /// Operation that has been started. No polling for operation status occurs.
  ///
  /// [`NoAwaitTag`]: @ref google::cloud::NoAwaitTag
  ///
  // clang-format on
  StatusOr<google::longrunning::Operation> PartialUpdateCluster(
      NoAwaitTag,
      google::bigtable::admin::v2::PartialUpdateClusterRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief PartialUpdateCluster
  ///
  /// This method accepts a `google::longrunning::Operation` that corresponds
  /// to a previously started Long Running Operation (LRO) and polls the status
  /// of the LRO in the background.
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::Cluster>> PartialUpdateCluster(
      google::longrunning::Operation const& operation, Options opts = {});

  // clang-format off
  ///
  /// Deletes a cluster from an instance.
  ///
  /// @param name  Required. The unique name of the cluster to be deleted. Values are of the
  ///  form `projects/{project}/instances/{instance}/clusters/{cluster}`.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return a [`Status`] object. If the request failed, the
  ///     status contains the details of the failure.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.DeleteClusterRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L597}
  ///
  // clang-format on
  Status DeleteCluster(std::string const& name, Options opts = {});

  // clang-format off
  ///
  /// Deletes a cluster from an instance.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.DeleteClusterRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return a [`Status`] object. If the request failed, the
  ///     status contains the details of the failure.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.DeleteClusterRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L597}
  ///
  // clang-format on
  Status DeleteCluster(
      google::bigtable::admin::v2::DeleteClusterRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// Creates an app profile within an instance.
  ///
  /// @param parent  Required. The unique name of the instance in which to create the new app
  ///  profile. Values are of the form `projects/{project}/instances/{instance}`.
  /// @param app_profile_id  Required. The ID to be used when referring to the new app profile within
  ///  its instance, e.g., just `myprofile` rather than
  ///  `projects/myproject/instances/myinstance/appProfiles/myprofile`.
  /// @param app_profile  Required. The app profile to be created.
  ///  Fields marked `OutputOnly` will be ignored.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.bigtable.admin.v2.AppProfile])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.AppProfile]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L289}
  /// [google.bigtable.admin.v2.CreateAppProfileRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L721}
  ///
  // clang-format on
  StatusOr<google::bigtable::admin::v2::AppProfile> CreateAppProfile(
      std::string const& parent, std::string const& app_profile_id,
      google::bigtable::admin::v2::AppProfile const& app_profile,
      Options opts = {});

  // clang-format off
  ///
  /// Creates an app profile within an instance.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.CreateAppProfileRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.bigtable.admin.v2.AppProfile])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.AppProfile]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L289}
  /// [google.bigtable.admin.v2.CreateAppProfileRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L721}
  ///
  // clang-format on
  StatusOr<google::bigtable::admin::v2::AppProfile> CreateAppProfile(
      google::bigtable::admin::v2::CreateAppProfileRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// Gets information about an app profile.
  ///
  /// @param name  Required. The unique name of the requested app profile. Values are of the
  ///  form `projects/{project}/instances/{instance}/appProfiles/{app_profile}`.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.bigtable.admin.v2.AppProfile])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.AppProfile]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L289}
  /// [google.bigtable.admin.v2.GetAppProfileRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L745}
  ///
  // clang-format on
  StatusOr<google::bigtable::admin::v2::AppProfile> GetAppProfile(
      std::string const& name, Options opts = {});

  // clang-format off
  ///
  /// Gets information about an app profile.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.GetAppProfileRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.bigtable.admin.v2.AppProfile])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.AppProfile]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L289}
  /// [google.bigtable.admin.v2.GetAppProfileRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L745}
  ///
  // clang-format on
  StatusOr<google::bigtable::admin::v2::AppProfile> GetAppProfile(
      google::bigtable::admin::v2::GetAppProfileRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// Lists information about app profiles in an instance.
  ///
  /// @param parent  Required. The unique name of the instance for which a list of app profiles
  ///  is requested. Values are of the form
  ///  `projects/{project}/instances/{instance}`.
  ///  Use `{instance} = "-"` to list AppProfiles for all Instances in a project,
  ///  e.g., `projects/myproject/instances/-`.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return a [StreamRange](@ref google::cloud::StreamRange)
  ///     to iterate of the results. See the documentation of this type for
  ///     details. In brief, this class has `begin()` and `end()` member
  ///     functions returning a iterator class meeting the
  ///     [input iterator requirements]. The value type for this iterator is a
  ///     [`StatusOr`] as the iteration may fail even after some values are
  ///     retrieved successfully, for example, if there is a network disconnect.
  ///     An empty set of results does not indicate an error, it indicates
  ///     that there are no resources meeting the request criteria.
  ///     On a successful iteration the `StatusOr<T>` contains elements of type
  ///     [google.bigtable.admin.v2.AppProfile], or rather,
  ///     the C++ class generated by Protobuf from that type. Please consult the
  ///     Protobuf documentation for details on the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.AppProfile]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L289}
  /// [google.bigtable.admin.v2.ListAppProfilesRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L757}
  ///
  // clang-format on
  StreamRange<google::bigtable::admin::v2::AppProfile> ListAppProfiles(
      std::string const& parent, Options opts = {});

  // clang-format off
  ///
  /// Lists information about app profiles in an instance.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.ListAppProfilesRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return a [StreamRange](@ref google::cloud::StreamRange)
  ///     to iterate of the results. See the documentation of this type for
  ///     details. In brief, this class has `begin()` and `end()` member
  ///     functions returning a iterator class meeting the
  ///     [input iterator requirements]. The value type for this iterator is a
  ///     [`StatusOr`] as the iteration may fail even after some values are
  ///     retrieved successfully, for example, if there is a network disconnect.
  ///     An empty set of results does not indicate an error, it indicates
  ///     that there are no resources meeting the request criteria.
  ///     On a successful iteration the `StatusOr<T>` contains elements of type
  ///     [google.bigtable.admin.v2.AppProfile], or rather,
  ///     the C++ class generated by Protobuf from that type. Please consult the
  ///     Protobuf documentation for details on the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.AppProfile]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L289}
  /// [google.bigtable.admin.v2.ListAppProfilesRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L757}
  ///
  // clang-format on
  StreamRange<google::bigtable::admin::v2::AppProfile> ListAppProfiles(
      google::bigtable::admin::v2::ListAppProfilesRequest request,
      Options opts = {});

  // clang-format off
  ///
  /// Updates an app profile within an instance.
  ///
  /// @param app_profile  Required. The app profile which will (partially) replace the current value.
  /// @param update_mask  Required. The subset of app profile fields which should be replaced.
  ///  If unset, all fields will be replaced.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return A [`future`] that becomes satisfied when the LRO
  ///     ([Long Running Operation]) completes or the polling policy in effect
  ///     for this call is exhausted. The future is satisfied with an error if
  ///     the LRO completes with an error or the polling policy is exhausted.
  ///     In this case the [`StatusOr`] returned by the future contains the
  ///     error. If the LRO completes successfully the value of the future
  ///     contains the LRO's result. For this RPC the result is a
  ///     [google.bigtable.admin.v2.AppProfile] proto message.
  ///     The C++ class representing this message is created by Protobuf, using
  ///     the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [Long Running Operation]: https://google.aip.dev/151
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.AppProfile]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L289}
  /// [google.bigtable.admin.v2.UpdateAppProfileRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L803}
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::AppProfile>> UpdateAppProfile(
      google::bigtable::admin::v2::AppProfile const& app_profile,
      google::protobuf::FieldMask const& update_mask, Options opts = {});

  // clang-format off
  ///
  /// @copybrief UpdateAppProfile
  ///
  /// Specifying the [`NoAwaitTag`] immediately returns the
  /// [`google::longrunning::Operation`] that corresponds to the Long Running
  /// Operation that has been started. No polling for operation status occurs.
  ///
  /// [`NoAwaitTag`]: @ref google::cloud::NoAwaitTag
  ///
  // clang-format on
  StatusOr<google::longrunning::Operation> UpdateAppProfile(
      NoAwaitTag, google::bigtable::admin::v2::AppProfile const& app_profile,
      google::protobuf::FieldMask const& update_mask, Options opts = {});

  // clang-format off
  ///
  /// Updates an app profile within an instance.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.UpdateAppProfileRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return A [`future`] that becomes satisfied when the LRO
  ///     ([Long Running Operation]) completes or the polling policy in effect
  ///     for this call is exhausted. The future is satisfied with an error if
  ///     the LRO completes with an error or the polling policy is exhausted.
  ///     In this case the [`StatusOr`] returned by the future contains the
  ///     error. If the LRO completes successfully the value of the future
  ///     contains the LRO's result. For this RPC the result is a
  ///     [google.bigtable.admin.v2.AppProfile] proto message.
  ///     The C++ class representing this message is created by Protobuf, using
  ///     the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [Long Running Operation]: https://google.aip.dev/151
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.AppProfile]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L289}
  /// [google.bigtable.admin.v2.UpdateAppProfileRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L803}
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::AppProfile>> UpdateAppProfile(
      google::bigtable::admin::v2::UpdateAppProfileRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief UpdateAppProfile
  ///
  /// Specifying the [`NoAwaitTag`] immediately returns the
  /// [`google::longrunning::Operation`] that corresponds to the Long Running
  /// Operation that has been started. No polling for operation status occurs.
  ///
  /// [`NoAwaitTag`]: @ref google::cloud::NoAwaitTag
  ///
  // clang-format on
  StatusOr<google::longrunning::Operation> UpdateAppProfile(
      NoAwaitTag,
      google::bigtable::admin::v2::UpdateAppProfileRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief UpdateAppProfile
  ///
  /// This method accepts a `google::longrunning::Operation` that corresponds
  /// to a previously started Long Running Operation (LRO) and polls the status
  /// of the LRO in the background.
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::AppProfile>> UpdateAppProfile(
      google::longrunning::Operation const& operation, Options opts = {});

  // clang-format off
  ///
  /// Deletes an app profile from an instance.
  ///
  /// @param name  Required. The unique name of the app profile to be deleted. Values are of
  ///  the form
  ///  `projects/{project}/instances/{instance}/appProfiles/{app_profile}`.
  /// @param ignore_warnings  Required. If true, ignore safety checks when deleting the app profile.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return a [`Status`] object. If the request failed, the
  ///     status contains the details of the failure.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.DeleteAppProfileRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L817}
  ///
  // clang-format on
  Status DeleteAppProfile(std::string const& name, bool ignore_warnings,
                          Options opts = {});

  // clang-format off
  ///
  /// Deletes an app profile from an instance.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.DeleteAppProfileRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return a [`Status`] object. If the request failed, the
  ///     status contains the details of the failure.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.DeleteAppProfileRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L817}
  ///
  // clang-format on
  Status DeleteAppProfile(
      google::bigtable::admin::v2::DeleteAppProfileRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// Gets the access control policy for an instance resource. Returns an empty
  /// policy if an instance exists but does not have a policy set.
  ///
  /// @param resource  REQUIRED: The resource for which the policy is being requested.
  ///  See the operation documentation for the appropriate value for this field.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.iam.v1.Policy])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.iam.v1.GetIamPolicyRequest]: @googleapis_reference_link{google/iam/v1/iam_policy.proto#L123}
  /// [google.iam.v1.Policy]: @googleapis_reference_link{google/iam/v1/policy.proto#L102}
  ///
  // clang-format on
  StatusOr<google::iam::v1::Policy> GetIamPolicy(std::string const& resource,
                                                 Options opts = {});

  // clang-format off
  ///
  /// Gets the access control policy for an instance resource. Returns an empty
  /// policy if an instance exists but does not have a policy set.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.iam.v1.GetIamPolicyRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.iam.v1.Policy])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.iam.v1.GetIamPolicyRequest]: @googleapis_reference_link{google/iam/v1/iam_policy.proto#L123}
  /// [google.iam.v1.Policy]: @googleapis_reference_link{google/iam/v1/policy.proto#L102}
  ///
  // clang-format on
  StatusOr<google::iam::v1::Policy> GetIamPolicy(
      google::iam::v1::GetIamPolicyRequest const& request, Options opts = {});

  // clang-format off
  ///
  /// Sets the access control policy on an instance resource. Replaces any
  /// existing policy.
  ///
  /// @param resource  REQUIRED: The resource for which the policy is being specified.
  ///  See the operation documentation for the appropriate value for this field.
  /// @param policy  REQUIRED: The complete policy to be applied to the `resource`. The size of
  ///  the policy is limited to a few 10s of KB. An empty policy is a
  ///  valid policy but certain Cloud Platform services (such as Projects)
  ///  might reject them.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.iam.v1.Policy])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.iam.v1.Policy]: @googleapis_reference_link{google/iam/v1/policy.proto#L102}
  /// [google.iam.v1.SetIamPolicyRequest]: @googleapis_reference_link{google/iam/v1/iam_policy.proto#L100}
  ///
  // clang-format on
  StatusOr<google::iam::v1::Policy> SetIamPolicy(
      std::string const& resource, google::iam::v1::Policy const& policy,
      Options opts = {});

  /**
   * Updates the IAM policy for @p resource using an optimistic concurrency
   * control loop.
   *
   * The loop fetches the current policy for @p resource, and passes it to @p
   * updater, which should return the new policy. This new policy should use the
   * current etag so that the read-modify-write cycle can detect races and rerun
   * the update when there is a mismatch. If the new policy does not have an
   * etag, the existing policy will be blindly overwritten. If @p updater does
   * not yield a policy, the control loop is terminated and kCancelled is
   * returned.
   *
   * @param resource  Required. The resource for which the policy is being
   * specified. See the operation documentation for the appropriate value for
   * this field.
   * @param updater  Required. Functor to map the current policy to a new one.
   * @param opts  Optional. Override the class-level options, such as retry and
   *    backoff policies.
   * @return google::iam::v1::Policy
   */
  StatusOr<google::iam::v1::Policy> SetIamPolicy(std::string const& resource,
                                                 IamUpdater const& updater,
                                                 Options opts = {});

  // clang-format off
  ///
  /// Sets the access control policy on an instance resource. Replaces any
  /// existing policy.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.iam.v1.SetIamPolicyRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.iam.v1.Policy])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.iam.v1.Policy]: @googleapis_reference_link{google/iam/v1/policy.proto#L102}
  /// [google.iam.v1.SetIamPolicyRequest]: @googleapis_reference_link{google/iam/v1/iam_policy.proto#L100}
  ///
  // clang-format on
  StatusOr<google::iam::v1::Policy> SetIamPolicy(
      google::iam::v1::SetIamPolicyRequest const& request, Options opts = {});

  // clang-format off
  ///
  /// Returns permissions that the caller has on the specified instance resource.
  ///
  /// @param resource  REQUIRED: The resource for which the policy detail is being requested.
  ///  See the operation documentation for the appropriate value for this field.
  /// @param permissions  The set of permissions to check for the `resource`. Permissions with
  ///  wildcards (such as '*' or 'storage.*') are not allowed. For more
  ///  information see
  ///  [IAM Overview](https://cloud.google.com/iam/docs/overview#permissions).
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.iam.v1.TestIamPermissionsResponse])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.iam.v1.TestIamPermissionsRequest]: @googleapis_reference_link{google/iam/v1/iam_policy.proto#L137}
  /// [google.iam.v1.TestIamPermissionsResponse]: @googleapis_reference_link{google/iam/v1/iam_policy.proto#L153}
  ///
  // clang-format on
  StatusOr<google::iam::v1::TestIamPermissionsResponse> TestIamPermissions(
      std::string const& resource, std::vector<std::string> const& permissions,
      Options opts = {});

  // clang-format off
  ///
  /// Returns permissions that the caller has on the specified instance resource.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.iam.v1.TestIamPermissionsRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.iam.v1.TestIamPermissionsResponse])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.iam.v1.TestIamPermissionsRequest]: @googleapis_reference_link{google/iam/v1/iam_policy.proto#L137}
  /// [google.iam.v1.TestIamPermissionsResponse]: @googleapis_reference_link{google/iam/v1/iam_policy.proto#L153}
  ///
  // clang-format on
  StatusOr<google::iam::v1::TestIamPermissionsResponse> TestIamPermissions(
      google::iam::v1::TestIamPermissionsRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// Lists hot tablets in a cluster, within the time range provided. Hot
  /// tablets are ordered based on CPU usage.
  ///
  /// @param parent  Required. The cluster name to list hot tablets.
  ///  Value is in the following form:
  ///  `projects/{project}/instances/{instance}/clusters/{cluster}`.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return a [StreamRange](@ref google::cloud::StreamRange)
  ///     to iterate of the results. See the documentation of this type for
  ///     details. In brief, this class has `begin()` and `end()` member
  ///     functions returning a iterator class meeting the
  ///     [input iterator requirements]. The value type for this iterator is a
  ///     [`StatusOr`] as the iteration may fail even after some values are
  ///     retrieved successfully, for example, if there is a network disconnect.
  ///     An empty set of results does not indicate an error, it indicates
  ///     that there are no resources meeting the request criteria.
  ///     On a successful iteration the `StatusOr<T>` contains elements of type
  ///     [google.bigtable.admin.v2.HotTablet], or rather,
  ///     the C++ class generated by Protobuf from that type. Please consult the
  ///     Protobuf documentation for details on the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.HotTablet]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L439}
  /// [google.bigtable.admin.v2.ListHotTabletsRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L836}
  ///
  // clang-format on
  StreamRange<google::bigtable::admin::v2::HotTablet> ListHotTablets(
      std::string const& parent, Options opts = {});

  // clang-format off
  ///
  /// Lists hot tablets in a cluster, within the time range provided. Hot
  /// tablets are ordered based on CPU usage.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.ListHotTabletsRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return a [StreamRange](@ref google::cloud::StreamRange)
  ///     to iterate of the results. See the documentation of this type for
  ///     details. In brief, this class has `begin()` and `end()` member
  ///     functions returning a iterator class meeting the
  ///     [input iterator requirements]. The value type for this iterator is a
  ///     [`StatusOr`] as the iteration may fail even after some values are
  ///     retrieved successfully, for example, if there is a network disconnect.
  ///     An empty set of results does not indicate an error, it indicates
  ///     that there are no resources meeting the request criteria.
  ///     On a successful iteration the `StatusOr<T>` contains elements of type
  ///     [google.bigtable.admin.v2.HotTablet], or rather,
  ///     the C++ class generated by Protobuf from that type. Please consult the
  ///     Protobuf documentation for details on the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.HotTablet]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L439}
  /// [google.bigtable.admin.v2.ListHotTabletsRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L836}
  ///
  // clang-format on
  StreamRange<google::bigtable::admin::v2::HotTablet> ListHotTablets(
      google::bigtable::admin::v2::ListHotTabletsRequest request,
      Options opts = {});

  // clang-format off
  ///
  /// Creates a logical view within an instance.
  ///
  /// @param parent  Required. The parent instance where this logical view will be created.
  ///  Format: `projects/{project}/instances/{instance}`.
  /// @param logical_view  Required. The logical view to create.
  /// @param logical_view_id  Required. The ID to use for the logical view, which will become the final
  ///  component of the logical view's resource name.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return A [`future`] that becomes satisfied when the LRO
  ///     ([Long Running Operation]) completes or the polling policy in effect
  ///     for this call is exhausted. The future is satisfied with an error if
  ///     the LRO completes with an error or the polling policy is exhausted.
  ///     In this case the [`StatusOr`] returned by the future contains the
  ///     error. If the LRO completes successfully the value of the future
  ///     contains the LRO's result. For this RPC the result is a
  ///     [google.bigtable.admin.v2.LogicalView] proto message.
  ///     The C++ class representing this message is created by Protobuf, using
  ///     the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [Long Running Operation]: https://google.aip.dev/151
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.CreateLogicalViewRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L889}
  /// [google.bigtable.admin.v2.LogicalView]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L479}
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::LogicalView>> CreateLogicalView(
      std::string const& parent,
      google::bigtable::admin::v2::LogicalView const& logical_view,
      std::string const& logical_view_id, Options opts = {});

  // clang-format off
  ///
  /// @copybrief CreateLogicalView
  ///
  /// Specifying the [`NoAwaitTag`] immediately returns the
  /// [`google::longrunning::Operation`] that corresponds to the Long Running
  /// Operation that has been started. No polling for operation status occurs.
  ///
  /// [`NoAwaitTag`]: @ref google::cloud::NoAwaitTag
  ///
  // clang-format on
  StatusOr<google::longrunning::Operation> CreateLogicalView(
      NoAwaitTag, std::string const& parent,
      google::bigtable::admin::v2::LogicalView const& logical_view,
      std::string const& logical_view_id, Options opts = {});

  // clang-format off
  ///
  /// Creates a logical view within an instance.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.CreateLogicalViewRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return A [`future`] that becomes satisfied when the LRO
  ///     ([Long Running Operation]) completes or the polling policy in effect
  ///     for this call is exhausted. The future is satisfied with an error if
  ///     the LRO completes with an error or the polling policy is exhausted.
  ///     In this case the [`StatusOr`] returned by the future contains the
  ///     error. If the LRO completes successfully the value of the future
  ///     contains the LRO's result. For this RPC the result is a
  ///     [google.bigtable.admin.v2.LogicalView] proto message.
  ///     The C++ class representing this message is created by Protobuf, using
  ///     the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [Long Running Operation]: https://google.aip.dev/151
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.CreateLogicalViewRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L889}
  /// [google.bigtable.admin.v2.LogicalView]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L479}
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::LogicalView>> CreateLogicalView(
      google::bigtable::admin::v2::CreateLogicalViewRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief CreateLogicalView
  ///
  /// Specifying the [`NoAwaitTag`] immediately returns the
  /// [`google::longrunning::Operation`] that corresponds to the Long Running
  /// Operation that has been started. No polling for operation status occurs.
  ///
  /// [`NoAwaitTag`]: @ref google::cloud::NoAwaitTag
  ///
  // clang-format on
  StatusOr<google::longrunning::Operation> CreateLogicalView(
      NoAwaitTag,
      google::bigtable::admin::v2::CreateLogicalViewRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief CreateLogicalView
  ///
  /// This method accepts a `google::longrunning::Operation` that corresponds
  /// to a previously started Long Running Operation (LRO) and polls the status
  /// of the LRO in the background.
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::LogicalView>> CreateLogicalView(
      google::longrunning::Operation const& operation, Options opts = {});

  // clang-format off
  ///
  /// Gets information about a logical view.
  ///
  /// @param name  Required. The unique name of the requested logical view. Values are of the
  ///  form `projects/{project}/instances/{instance}/logicalViews/{logical_view}`.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.bigtable.admin.v2.LogicalView])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.GetLogicalViewRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L921}
  /// [google.bigtable.admin.v2.LogicalView]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L479}
  ///
  // clang-format on
  StatusOr<google::bigtable::admin::v2::LogicalView> GetLogicalView(
      std::string const& name, Options opts = {});

  // clang-format off
  ///
  /// Gets information about a logical view.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.GetLogicalViewRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.bigtable.admin.v2.LogicalView])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.GetLogicalViewRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L921}
  /// [google.bigtable.admin.v2.LogicalView]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L479}
  ///
  // clang-format on
  StatusOr<google::bigtable::admin::v2::LogicalView> GetLogicalView(
      google::bigtable::admin::v2::GetLogicalViewRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// Lists information about logical views in an instance.
  ///
  /// @param parent  Required. The unique name of the instance for which the list of logical
  ///  views is requested. Values are of the form
  ///  `projects/{project}/instances/{instance}`.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return a [StreamRange](@ref google::cloud::StreamRange)
  ///     to iterate of the results. See the documentation of this type for
  ///     details. In brief, this class has `begin()` and `end()` member
  ///     functions returning a iterator class meeting the
  ///     [input iterator requirements]. The value type for this iterator is a
  ///     [`StatusOr`] as the iteration may fail even after some values are
  ///     retrieved successfully, for example, if there is a network disconnect.
  ///     An empty set of results does not indicate an error, it indicates
  ///     that there are no resources meeting the request criteria.
  ///     On a successful iteration the `StatusOr<T>` contains elements of type
  ///     [google.bigtable.admin.v2.LogicalView], or rather,
  ///     the C++ class generated by Protobuf from that type. Please consult the
  ///     Protobuf documentation for details on the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.ListLogicalViewsRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L933}
  /// [google.bigtable.admin.v2.LogicalView]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L479}
  ///
  // clang-format on
  StreamRange<google::bigtable::admin::v2::LogicalView> ListLogicalViews(
      std::string const& parent, Options opts = {});

  // clang-format off
  ///
  /// Lists information about logical views in an instance.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.ListLogicalViewsRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return a [StreamRange](@ref google::cloud::StreamRange)
  ///     to iterate of the results. See the documentation of this type for
  ///     details. In brief, this class has `begin()` and `end()` member
  ///     functions returning a iterator class meeting the
  ///     [input iterator requirements]. The value type for this iterator is a
  ///     [`StatusOr`] as the iteration may fail even after some values are
  ///     retrieved successfully, for example, if there is a network disconnect.
  ///     An empty set of results does not indicate an error, it indicates
  ///     that there are no resources meeting the request criteria.
  ///     On a successful iteration the `StatusOr<T>` contains elements of type
  ///     [google.bigtable.admin.v2.LogicalView], or rather,
  ///     the C++ class generated by Protobuf from that type. Please consult the
  ///     Protobuf documentation for details on the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.ListLogicalViewsRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L933}
  /// [google.bigtable.admin.v2.LogicalView]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L479}
  ///
  // clang-format on
  StreamRange<google::bigtable::admin::v2::LogicalView> ListLogicalViews(
      google::bigtable::admin::v2::ListLogicalViewsRequest request,
      Options opts = {});

  // clang-format off
  ///
  /// Updates a logical view within an instance.
  ///
  /// @param logical_view  Required. The logical view to update.
  ///  @n
  ///  The logical view's `name` field is used to identify the view to update.
  ///  Format:
  ///  `projects/{project}/instances/{instance}/logicalViews/{logical_view}`.
  /// @param update_mask  Optional. The list of fields to update.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return A [`future`] that becomes satisfied when the LRO
  ///     ([Long Running Operation]) completes or the polling policy in effect
  ///     for this call is exhausted. The future is satisfied with an error if
  ///     the LRO completes with an error or the polling policy is exhausted.
  ///     In this case the [`StatusOr`] returned by the future contains the
  ///     error. If the LRO completes successfully the value of the future
  ///     contains the LRO's result. For this RPC the result is a
  ///     [google.bigtable.admin.v2.LogicalView] proto message.
  ///     The C++ class representing this message is created by Protobuf, using
  ///     the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [Long Running Operation]: https://google.aip.dev/151
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.LogicalView]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L479}
  /// [google.bigtable.admin.v2.UpdateLogicalViewRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L967}
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::LogicalView>> UpdateLogicalView(
      google::bigtable::admin::v2::LogicalView const& logical_view,
      google::protobuf::FieldMask const& update_mask, Options opts = {});

  // clang-format off
  ///
  /// @copybrief UpdateLogicalView
  ///
  /// Specifying the [`NoAwaitTag`] immediately returns the
  /// [`google::longrunning::Operation`] that corresponds to the Long Running
  /// Operation that has been started. No polling for operation status occurs.
  ///
  /// [`NoAwaitTag`]: @ref google::cloud::NoAwaitTag
  ///
  // clang-format on
  StatusOr<google::longrunning::Operation> UpdateLogicalView(
      NoAwaitTag, google::bigtable::admin::v2::LogicalView const& logical_view,
      google::protobuf::FieldMask const& update_mask, Options opts = {});

  // clang-format off
  ///
  /// Updates a logical view within an instance.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.UpdateLogicalViewRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return A [`future`] that becomes satisfied when the LRO
  ///     ([Long Running Operation]) completes or the polling policy in effect
  ///     for this call is exhausted. The future is satisfied with an error if
  ///     the LRO completes with an error or the polling policy is exhausted.
  ///     In this case the [`StatusOr`] returned by the future contains the
  ///     error. If the LRO completes successfully the value of the future
  ///     contains the LRO's result. For this RPC the result is a
  ///     [google.bigtable.admin.v2.LogicalView] proto message.
  ///     The C++ class representing this message is created by Protobuf, using
  ///     the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [Long Running Operation]: https://google.aip.dev/151
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.LogicalView]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L479}
  /// [google.bigtable.admin.v2.UpdateLogicalViewRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L967}
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::LogicalView>> UpdateLogicalView(
      google::bigtable::admin::v2::UpdateLogicalViewRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief UpdateLogicalView
  ///
  /// Specifying the [`NoAwaitTag`] immediately returns the
  /// [`google::longrunning::Operation`] that corresponds to the Long Running
  /// Operation that has been started. No polling for operation status occurs.
  ///
  /// [`NoAwaitTag`]: @ref google::cloud::NoAwaitTag
  ///
  // clang-format on
  StatusOr<google::longrunning::Operation> UpdateLogicalView(
      NoAwaitTag,
      google::bigtable::admin::v2::UpdateLogicalViewRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief UpdateLogicalView
  ///
  /// This method accepts a `google::longrunning::Operation` that corresponds
  /// to a previously started Long Running Operation (LRO) and polls the status
  /// of the LRO in the background.
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::LogicalView>> UpdateLogicalView(
      google::longrunning::Operation const& operation, Options opts = {});

  // clang-format off
  ///
  /// Deletes a logical view from an instance.
  ///
  /// @param name  Required. The unique name of the logical view to be deleted.
  ///  Format:
  ///  `projects/{project}/instances/{instance}/logicalViews/{logical_view}`.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return a [`Status`] object. If the request failed, the
  ///     status contains the details of the failure.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.DeleteLogicalViewRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L994}
  ///
  // clang-format on
  Status DeleteLogicalView(std::string const& name, Options opts = {});

  // clang-format off
  ///
  /// Deletes a logical view from an instance.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.DeleteLogicalViewRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return a [`Status`] object. If the request failed, the
  ///     status contains the details of the failure.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.DeleteLogicalViewRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L994}
  ///
  // clang-format on
  Status DeleteLogicalView(
      google::bigtable::admin::v2::DeleteLogicalViewRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// Creates a materialized view within an instance.
  ///
  /// @param parent  Required. The parent instance where this materialized view will be created.
  ///  Format: `projects/{project}/instances/{instance}`.
  /// @param materialized_view  Required. The materialized view to create.
  /// @param materialized_view_id  Required. The ID to use for the materialized view, which will become the
  ///  final component of the materialized view's resource name.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return A [`future`] that becomes satisfied when the LRO
  ///     ([Long Running Operation]) completes or the polling policy in effect
  ///     for this call is exhausted. The future is satisfied with an error if
  ///     the LRO completes with an error or the polling policy is exhausted.
  ///     In this case the [`StatusOr`] returned by the future contains the
  ///     error. If the LRO completes successfully the value of the future
  ///     contains the LRO's result. For this RPC the result is a
  ///     [google.bigtable.admin.v2.MaterializedView] proto message.
  ///     The C++ class representing this message is created by Protobuf, using
  ///     the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [Long Running Operation]: https://google.aip.dev/151
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.CreateMaterializedViewRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L1013}
  /// [google.bigtable.admin.v2.MaterializedView]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L506}
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::MaterializedView>>
  CreateMaterializedView(
      std::string const& parent,
      google::bigtable::admin::v2::MaterializedView const& materialized_view,
      std::string const& materialized_view_id, Options opts = {});

  // clang-format off
  ///
  /// @copybrief CreateMaterializedView
  ///
  /// Specifying the [`NoAwaitTag`] immediately returns the
  /// [`google::longrunning::Operation`] that corresponds to the Long Running
  /// Operation that has been started. No polling for operation status occurs.
  ///
  /// [`NoAwaitTag`]: @ref google::cloud::NoAwaitTag
  ///
  // clang-format on
  StatusOr<google::longrunning::Operation> CreateMaterializedView(
      NoAwaitTag, std::string const& parent,
      google::bigtable::admin::v2::MaterializedView const& materialized_view,
      std::string const& materialized_view_id, Options opts = {});

  // clang-format off
  ///
  /// Creates a materialized view within an instance.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.CreateMaterializedViewRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return A [`future`] that becomes satisfied when the LRO
  ///     ([Long Running Operation]) completes or the polling policy in effect
  ///     for this call is exhausted. The future is satisfied with an error if
  ///     the LRO completes with an error or the polling policy is exhausted.
  ///     In this case the [`StatusOr`] returned by the future contains the
  ///     error. If the LRO completes successfully the value of the future
  ///     contains the LRO's result. For this RPC the result is a
  ///     [google.bigtable.admin.v2.MaterializedView] proto message.
  ///     The C++ class representing this message is created by Protobuf, using
  ///     the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [Long Running Operation]: https://google.aip.dev/151
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.CreateMaterializedViewRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L1013}
  /// [google.bigtable.admin.v2.MaterializedView]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L506}
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::MaterializedView>>
  CreateMaterializedView(
      google::bigtable::admin::v2::CreateMaterializedViewRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief CreateMaterializedView
  ///
  /// Specifying the [`NoAwaitTag`] immediately returns the
  /// [`google::longrunning::Operation`] that corresponds to the Long Running
  /// Operation that has been started. No polling for operation status occurs.
  ///
  /// [`NoAwaitTag`]: @ref google::cloud::NoAwaitTag
  ///
  // clang-format on
  StatusOr<google::longrunning::Operation> CreateMaterializedView(
      NoAwaitTag,
      google::bigtable::admin::v2::CreateMaterializedViewRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief CreateMaterializedView
  ///
  /// This method accepts a `google::longrunning::Operation` that corresponds
  /// to a previously started Long Running Operation (LRO) and polls the status
  /// of the LRO in the background.
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::MaterializedView>>
  CreateMaterializedView(google::longrunning::Operation const& operation,
                         Options opts = {});

  // clang-format off
  ///
  /// Gets information about a materialized view.
  ///
  /// @param name  Required. The unique name of the requested materialized view. Values are of
  ///  the form
  ///  `projects/{project}/instances/{instance}/materializedViews/{materialized_view}`.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.bigtable.admin.v2.MaterializedView])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.GetMaterializedViewRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L1046}
  /// [google.bigtable.admin.v2.MaterializedView]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L506}
  ///
  // clang-format on
  StatusOr<google::bigtable::admin::v2::MaterializedView> GetMaterializedView(
      std::string const& name, Options opts = {});

  // clang-format off
  ///
  /// Gets information about a materialized view.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.GetMaterializedViewRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return the result of the RPC. The response message type
  ///     ([google.bigtable.admin.v2.MaterializedView])
  ///     is mapped to a C++ class using the [Protobuf mapping rules].
  ///     If the request fails, the [`StatusOr`] contains the error details.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.GetMaterializedViewRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L1046}
  /// [google.bigtable.admin.v2.MaterializedView]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L506}
  ///
  // clang-format on
  StatusOr<google::bigtable::admin::v2::MaterializedView> GetMaterializedView(
      google::bigtable::admin::v2::GetMaterializedViewRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// Lists information about materialized views in an instance.
  ///
  /// @param parent  Required. The unique name of the instance for which the list of
  ///  materialized views is requested. Values are of the form
  ///  `projects/{project}/instances/{instance}`.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return a [StreamRange](@ref google::cloud::StreamRange)
  ///     to iterate of the results. See the documentation of this type for
  ///     details. In brief, this class has `begin()` and `end()` member
  ///     functions returning a iterator class meeting the
  ///     [input iterator requirements]. The value type for this iterator is a
  ///     [`StatusOr`] as the iteration may fail even after some values are
  ///     retrieved successfully, for example, if there is a network disconnect.
  ///     An empty set of results does not indicate an error, it indicates
  ///     that there are no resources meeting the request criteria.
  ///     On a successful iteration the `StatusOr<T>` contains elements of type
  ///     [google.bigtable.admin.v2.MaterializedView], or rather,
  ///     the C++ class generated by Protobuf from that type. Please consult the
  ///     Protobuf documentation for details on the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.ListMaterializedViewsRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L1059}
  /// [google.bigtable.admin.v2.MaterializedView]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L506}
  ///
  // clang-format on
  StreamRange<google::bigtable::admin::v2::MaterializedView>
  ListMaterializedViews(std::string const& parent, Options opts = {});

  // clang-format off
  ///
  /// Lists information about materialized views in an instance.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.ListMaterializedViewsRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return a [StreamRange](@ref google::cloud::StreamRange)
  ///     to iterate of the results. See the documentation of this type for
  ///     details. In brief, this class has `begin()` and `end()` member
  ///     functions returning a iterator class meeting the
  ///     [input iterator requirements]. The value type for this iterator is a
  ///     [`StatusOr`] as the iteration may fail even after some values are
  ///     retrieved successfully, for example, if there is a network disconnect.
  ///     An empty set of results does not indicate an error, it indicates
  ///     that there are no resources meeting the request criteria.
  ///     On a successful iteration the `StatusOr<T>` contains elements of type
  ///     [google.bigtable.admin.v2.MaterializedView], or rather,
  ///     the C++ class generated by Protobuf from that type. Please consult the
  ///     Protobuf documentation for details on the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.ListMaterializedViewsRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L1059}
  /// [google.bigtable.admin.v2.MaterializedView]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L506}
  ///
  // clang-format on
  StreamRange<google::bigtable::admin::v2::MaterializedView>
  ListMaterializedViews(
      google::bigtable::admin::v2::ListMaterializedViewsRequest request,
      Options opts = {});

  // clang-format off
  ///
  /// Updates a materialized view within an instance.
  ///
  /// @param materialized_view  Required. The materialized view to update.
  ///  @n
  ///  The materialized view's `name` field is used to identify the view to
  ///  update. Format:
  ///  `projects/{project}/instances/{instance}/materializedViews/{materialized_view}`.
  /// @param update_mask  Optional. The list of fields to update.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return A [`future`] that becomes satisfied when the LRO
  ///     ([Long Running Operation]) completes or the polling policy in effect
  ///     for this call is exhausted. The future is satisfied with an error if
  ///     the LRO completes with an error or the polling policy is exhausted.
  ///     In this case the [`StatusOr`] returned by the future contains the
  ///     error. If the LRO completes successfully the value of the future
  ///     contains the LRO's result. For this RPC the result is a
  ///     [google.bigtable.admin.v2.MaterializedView] proto message.
  ///     The C++ class representing this message is created by Protobuf, using
  ///     the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [Long Running Operation]: https://google.aip.dev/151
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.MaterializedView]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L506}
  /// [google.bigtable.admin.v2.UpdateMaterializedViewRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L1093}
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::MaterializedView>>
  UpdateMaterializedView(
      google::bigtable::admin::v2::MaterializedView const& materialized_view,
      google::protobuf::FieldMask const& update_mask, Options opts = {});

  // clang-format off
  ///
  /// @copybrief UpdateMaterializedView
  ///
  /// Specifying the [`NoAwaitTag`] immediately returns the
  /// [`google::longrunning::Operation`] that corresponds to the Long Running
  /// Operation that has been started. No polling for operation status occurs.
  ///
  /// [`NoAwaitTag`]: @ref google::cloud::NoAwaitTag
  ///
  // clang-format on
  StatusOr<google::longrunning::Operation> UpdateMaterializedView(
      NoAwaitTag,
      google::bigtable::admin::v2::MaterializedView const& materialized_view,
      google::protobuf::FieldMask const& update_mask, Options opts = {});

  // clang-format off
  ///
  /// Updates a materialized view within an instance.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.UpdateMaterializedViewRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return A [`future`] that becomes satisfied when the LRO
  ///     ([Long Running Operation]) completes or the polling policy in effect
  ///     for this call is exhausted. The future is satisfied with an error if
  ///     the LRO completes with an error or the polling policy is exhausted.
  ///     In this case the [`StatusOr`] returned by the future contains the
  ///     error. If the LRO completes successfully the value of the future
  ///     contains the LRO's result. For this RPC the result is a
  ///     [google.bigtable.admin.v2.MaterializedView] proto message.
  ///     The C++ class representing this message is created by Protobuf, using
  ///     the [Protobuf mapping rules].
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [Long Running Operation]: https://google.aip.dev/151
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.MaterializedView]: @googleapis_reference_link{google/bigtable/admin/v2/instance.proto#L506}
  /// [google.bigtable.admin.v2.UpdateMaterializedViewRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L1093}
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::MaterializedView>>
  UpdateMaterializedView(
      google::bigtable::admin::v2::UpdateMaterializedViewRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief UpdateMaterializedView
  ///
  /// Specifying the [`NoAwaitTag`] immediately returns the
  /// [`google::longrunning::Operation`] that corresponds to the Long Running
  /// Operation that has been started. No polling for operation status occurs.
  ///
  /// [`NoAwaitTag`]: @ref google::cloud::NoAwaitTag
  ///
  // clang-format on
  StatusOr<google::longrunning::Operation> UpdateMaterializedView(
      NoAwaitTag,
      google::bigtable::admin::v2::UpdateMaterializedViewRequest const& request,
      Options opts = {});

  // clang-format off
  ///
  /// @copybrief UpdateMaterializedView
  ///
  /// This method accepts a `google::longrunning::Operation` that corresponds
  /// to a previously started Long Running Operation (LRO) and polls the status
  /// of the LRO in the background.
  ///
  // clang-format on
  future<StatusOr<google::bigtable::admin::v2::MaterializedView>>
  UpdateMaterializedView(google::longrunning::Operation const& operation,
                         Options opts = {});

  // clang-format off
  ///
  /// Deletes a materialized view from an instance.
  ///
  /// @param name  Required. The unique name of the materialized view to be deleted.
  ///  Format:
  ///  `projects/{project}/instances/{instance}/materializedViews/{materialized_view}`.
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return a [`Status`] object. If the request failed, the
  ///     status contains the details of the failure.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.DeleteMaterializedViewRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L1121}
  ///
  // clang-format on
  Status DeleteMaterializedView(std::string const& name, Options opts = {});

  // clang-format off
  ///
  /// Deletes a materialized view from an instance.
  ///
  /// @param request Unary RPCs, such as the one wrapped by this
  ///     function, receive a single `request` proto message which includes all
  ///     the inputs for the RPC. In this case, the proto message is a
  ///     [google.bigtable.admin.v2.DeleteMaterializedViewRequest].
  ///     Proto messages are converted to C++ classes by Protobuf, using the
  ///     [Protobuf mapping rules].
  /// @param opts Optional. Override the class-level options, such as retry and
  ///     backoff policies.
  /// @return a [`Status`] object. If the request failed, the
  ///     status contains the details of the failure.
  ///
  /// [Protobuf mapping rules]: https://protobuf.dev/reference/cpp/cpp-generated/
  /// [input iterator requirements]: https://en.cppreference.com/w/cpp/named_req/InputIterator
  /// [`std::string`]: https://en.cppreference.com/w/cpp/string/basic_string
  /// [`future`]: @ref google::cloud::future
  /// [`StatusOr`]: @ref google::cloud::StatusOr
  /// [`Status`]: @ref google::cloud::Status
  /// [google.bigtable.admin.v2.DeleteMaterializedViewRequest]: @googleapis_reference_link{google/bigtable/admin/v2/bigtable_instance_admin.proto#L1121}
  ///
  // clang-format on
  Status DeleteMaterializedView(
      google::bigtable::admin::v2::DeleteMaterializedViewRequest const& request,
      Options opts = {});

 private:
  std::shared_ptr<BigtableInstanceAdminConnection> connection_;
  Options options_;
};

GOOGLE_CLOUD_CPP_INLINE_NAMESPACE_END
}  // namespace bigtable_admin
}  // namespace cloud
}  // namespace google

#endif  // GOOGLE_CLOUD_CPP_GOOGLE_CLOUD_BIGTABLE_ADMIN_BIGTABLE_INSTANCE_ADMIN_CLIENT_H
