# Cloud IoT API . projects . locations . registries

## Instance Methods

Returns the devices Resource.

Returns the groups Resource.

Associates the device with the gateway.

Creates a device registry that contains devices.

Deletes a device registry configuration.

Gets a device registry configuration.

Gets the access control policy for a resource.

Lists device registries.

Retrieves the next page of results.

Updates a device registry configuration.

Sets the access control policy on the specified resource. Replaces any

Returns permissions that a caller has on the specified resource.

Deletes the association between the device and the gateway.

### Method Details

`bindDeviceToGateway(parent, body=None, x__xgafv=None)`

    Associates the device with the gateway.

    Args:
      parent: string, Required. The name of the registry. For example,
    `projects/example-project/locations/us-central1/registries/my-registry`. (required)
      body: object, The request body.
        The object takes the form of:

    { # Request for `BindDeviceToGateway`.
        "deviceId": "A String", # Required. The device to associate with the specified gateway. The value of
            # `device_id` can be either the device numeric ID or the user-defined device
            # identifier.
        "gatewayId": "A String", # Required. The value of `gateway_id` can be either the device numeric ID or the
            # user-defined device identifier.
      }

      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # Response for `BindDeviceToGateway`.
      }

`create(parent, body=None, x__xgafv=None)`

    Creates a device registry that contains devices.

    Args:
      parent: string, Required. The project and cloud region where this device registry must be created.
    For example, `projects/example-project/locations/us-central1`. (required)
      body: object, The request body.
        The object takes the form of:

    { # A container for a group of devices.
      "credentials": [ # The credentials used to verify the device credentials. No more than 10
          # credentials can be bound to a single registry at a time. The verification
          # process occurs at the time of device creation or update. If this field is
          # empty, no verification is performed. Otherwise, the credentials of a newly
          # created device or added credentials of an updated device should be signed
          # with one of these registry credentials.
          #
          # Note, however, that existing devices will never be affected by
          # modifications to this list of credentials: after a device has been
          # successfully created in a registry, it should be able to connect even if
          # its registry credentials are revoked, deleted, or modified.
        { # A server-stored registry credential used to validate device credentials.
          "publicKeyCertificate": { # A public key certificate format and data. # A public key certificate used to verify the device credentials.
            "x509Details": { # Details of an X.509 certificate. For informational purposes only. # [Output only] The certificate details. Used only for X.509 certificates.
              "signatureAlgorithm": "A String", # The algorithm used to sign the certificate.
              "startTime": "A String", # The time the certificate becomes valid.
              "expiryTime": "A String", # The time the certificate becomes invalid.
              "subject": "A String", # The entity the certificate and public key belong to.
              "issuer": "A String", # The entity that signed the certificate.
              "publicKeyType": "A String", # The type of public key in the certificate.
            },
            "format": "A String", # The certificate format.
            "certificate": "A String", # The certificate data.
          },
        },
      ],
      "name": "A String", # The resource path name. For example,
          # `projects/example-project/locations/us-central1/registries/my-registry`.
      "eventNotificationConfigs": [ # The configuration for notification of telemetry events received from the
          # device. All telemetry events that were successfully published by the
          # device and acknowledged by Cloud IoT Core are guaranteed to be
          # delivered to Cloud Pub/Sub. If multiple configurations match a message,
          # only the first matching configuration is used. If you try to publish a
          # device telemetry event using MQTT without specifying a Cloud Pub/Sub topic
          # for the device's registry, the connection closes automatically. If you try
          # to do so using an HTTP connection, an error is returned. Up to 10
          # configurations may be provided.
        { # The configuration for forwarding telemetry events.
          "subfolderMatches": "A String", # If the subfolder name matches this string exactly, this configuration will
              # be used. The string must not include the leading '/' character. If empty,
              # all strings are matched. This field is used only for telemetry events;
              # subfolders are not supported for state changes.
          "pubsubTopicName": "A String", # A Cloud Pub/Sub topic name. For example,
              # `projects/myProject/topics/deviceEvents`.
        },
      ],
      "logLevel": "A String", # **Beta Feature**
          #
          # The default logging verbosity for activity from devices in this registry.
          # The verbosity level can be overridden by Device.log_level.
      "httpConfig": { # The configuration of the HTTP bridge for a device registry. # The DeviceService (HTTP) configuration for this device registry.
        "httpEnabledState": "A String", # If enabled, allows devices to use DeviceService via the HTTP protocol.
            # Otherwise, any requests to DeviceService will fail for this registry.
      },
      "id": "A String", # The identifier of this device registry. For example, `myRegistry`.
      "mqttConfig": { # The configuration of MQTT for a device registry. # The MQTT configuration for this device registry.
        "mqttEnabledState": "A String", # If enabled, allows connections using the MQTT protocol. Otherwise, MQTT
            # connections to this registry will fail.
      },
      "stateNotificationConfig": { # The configuration for notification of new states received from the device. # The configuration for notification of new states received from the device.
          # State updates are guaranteed to be stored in the state history, but
          # notifications to Cloud Pub/Sub are not guaranteed. For example, if
          # permissions are misconfigured or the specified topic doesn't exist, no
          # notification will be published but the state will still be stored in Cloud
          # IoT Core.
        "pubsubTopicName": "A String", # A Cloud Pub/Sub topic name. For example,
            # `projects/myProject/topics/deviceEvents`.
      },
    }

      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # A container for a group of devices.
        "credentials": [ # The credentials used to verify the device credentials. No more than 10
            # credentials can be bound to a single registry at a time. The verification
            # process occurs at the time of device creation or update. If this field is
            # empty, no verification is performed. Otherwise, the credentials of a newly
            # created device or added credentials of an updated device should be signed
            # with one of these registry credentials.
            #
            # Note, however, that existing devices will never be affected by
            # modifications to this list of credentials: after a device has been
            # successfully created in a registry, it should be able to connect even if
            # its registry credentials are revoked, deleted, or modified.
          { # A server-stored registry credential used to validate device credentials.
            "publicKeyCertificate": { # A public key certificate format and data. # A public key certificate used to verify the device credentials.
              "x509Details": { # Details of an X.509 certificate. For informational purposes only. # [Output only] The certificate details. Used only for X.509 certificates.
                "signatureAlgorithm": "A String", # The algorithm used to sign the certificate.
                "startTime": "A String", # The time the certificate becomes valid.
                "expiryTime": "A String", # The time the certificate becomes invalid.
                "subject": "A String", # The entity the certificate and public key belong to.
                "issuer": "A String", # The entity that signed the certificate.
                "publicKeyType": "A String", # The type of public key in the certificate.
              },
              "format": "A String", # The certificate format.
              "certificate": "A String", # The certificate data.
            },
          },
        ],
        "name": "A String", # The resource path name. For example,
            # `projects/example-project/locations/us-central1/registries/my-registry`.
        "eventNotificationConfigs": [ # The configuration for notification of telemetry events received from the
            # device. All telemetry events that were successfully published by the
            # device and acknowledged by Cloud IoT Core are guaranteed to be
            # delivered to Cloud Pub/Sub. If multiple configurations match a message,
            # only the first matching configuration is used. If you try to publish a
            # device telemetry event using MQTT without specifying a Cloud Pub/Sub topic
            # for the device's registry, the connection closes automatically. If you try
            # to do so using an HTTP connection, an error is returned. Up to 10
            # configurations may be provided.
          { # The configuration for forwarding telemetry events.
            "subfolderMatches": "A String", # If the subfolder name matches this string exactly, this configuration will
                # be used. The string must not include the leading '/' character. If empty,
                # all strings are matched. This field is used only for telemetry events;
                # subfolders are not supported for state changes.
            "pubsubTopicName": "A String", # A Cloud Pub/Sub topic name. For example,
                # `projects/myProject/topics/deviceEvents`.
          },
        ],
        "logLevel": "A String", # **Beta Feature**
            #
            # The default logging verbosity for activity from devices in this registry.
            # The verbosity level can be overridden by Device.log_level.
        "httpConfig": { # The configuration of the HTTP bridge for a device registry. # The DeviceService (HTTP) configuration for this device registry.
          "httpEnabledState": "A String", # If enabled, allows devices to use DeviceService via the HTTP protocol.
              # Otherwise, any requests to DeviceService will fail for this registry.
        },
        "id": "A String", # The identifier of this device registry. For example, `myRegistry`.
        "mqttConfig": { # The configuration of MQTT for a device registry. # The MQTT configuration for this device registry.
          "mqttEnabledState": "A String", # If enabled, allows connections using the MQTT protocol. Otherwise, MQTT
              # connections to this registry will fail.
        },
        "stateNotificationConfig": { # The configuration for notification of new states received from the device. # The configuration for notification of new states received from the device.
            # State updates are guaranteed to be stored in the state history, but
            # notifications to Cloud Pub/Sub are not guaranteed. For example, if
            # permissions are misconfigured or the specified topic doesn't exist, no
            # notification will be published but the state will still be stored in Cloud
            # IoT Core.
          "pubsubTopicName": "A String", # A Cloud Pub/Sub topic name. For example,
              # `projects/myProject/topics/deviceEvents`.
        },
      }

`delete(name, x__xgafv=None)`

    Deletes a device registry configuration.

    Args:
      name: string, Required. The name of the device registry. For example,
    `projects/example-project/locations/us-central1/registries/my-registry`. (required)
      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # A generic empty message that you can re-use to avoid defining duplicated
          # empty messages in your APIs. A typical example is to use it as the request
          # or the response type of an API method. For instance:
          #
          #     service Foo {
          #       rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty);
          #     }
          #
          # The JSON representation for `Empty` is empty JSON object `{}`.
      }

`get(name, x__xgafv=None)`

    Gets a device registry configuration.

    Args:
      name: string, Required. The name of the device registry. For example,
    `projects/example-project/locations/us-central1/registries/my-registry`. (required)
      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # A container for a group of devices.
        "credentials": [ # The credentials used to verify the device credentials. No more than 10
            # credentials can be bound to a single registry at a time. The verification
            # process occurs at the time of device creation or update. If this field is
            # empty, no verification is performed. Otherwise, the credentials of a newly
            # created device or added credentials of an updated device should be signed
            # with one of these registry credentials.
            #
            # Note, however, that existing devices will never be affected by
            # modifications to this list of credentials: after a device has been
            # successfully created in a registry, it should be able to connect even if
            # its registry credentials are revoked, deleted, or modified.
          { # A server-stored registry credential used to validate device credentials.
            "publicKeyCertificate": { # A public key certificate format and data. # A public key certificate used to verify the device credentials.
              "x509Details": { # Details of an X.509 certificate. For informational purposes only. # [Output only] The certificate details. Used only for X.509 certificates.
                "signatureAlgorithm": "A String", # The algorithm used to sign the certificate.
                "startTime": "A String", # The time the certificate becomes valid.
                "expiryTime": "A String", # The time the certificate becomes invalid.
                "subject": "A String", # The entity the certificate and public key belong to.
                "issuer": "A String", # The entity that signed the certificate.
                "publicKeyType": "A String", # The type of public key in the certificate.
              },
              "format": "A String", # The certificate format.
              "certificate": "A String", # The certificate data.
            },
          },
        ],
        "name": "A String", # The resource path name. For example,
            # `projects/example-project/locations/us-central1/registries/my-registry`.
        "eventNotificationConfigs": [ # The configuration for notification of telemetry events received from the
            # device. All telemetry events that were successfully published by the
            # device and acknowledged by Cloud IoT Core are guaranteed to be
            # delivered to Cloud Pub/Sub. If multiple configurations match a message,
            # only the first matching configuration is used. If you try to publish a
            # device telemetry event using MQTT without specifying a Cloud Pub/Sub topic
            # for the device's registry, the connection closes automatically. If you try
            # to do so using an HTTP connection, an error is returned. Up to 10
            # configurations may be provided.
          { # The configuration for forwarding telemetry events.
            "subfolderMatches": "A String", # If the subfolder name matches this string exactly, this configuration will
                # be used. The string must not include the leading '/' character. If empty,
                # all strings are matched. This field is used only for telemetry events;
                # subfolders are not supported for state changes.
            "pubsubTopicName": "A String", # A Cloud Pub/Sub topic name. For example,
                # `projects/myProject/topics/deviceEvents`.
          },
        ],
        "logLevel": "A String", # **Beta Feature**
            #
            # The default logging verbosity for activity from devices in this registry.
            # The verbosity level can be overridden by Device.log_level.
        "httpConfig": { # The configuration of the HTTP bridge for a device registry. # The DeviceService (HTTP) configuration for this device registry.
          "httpEnabledState": "A String", # If enabled, allows devices to use DeviceService via the HTTP protocol.
              # Otherwise, any requests to DeviceService will fail for this registry.
        },
        "id": "A String", # The identifier of this device registry. For example, `myRegistry`.
        "mqttConfig": { # The configuration of MQTT for a device registry. # The MQTT configuration for this device registry.
          "mqttEnabledState": "A String", # If enabled, allows connections using the MQTT protocol. Otherwise, MQTT
              # connections to this registry will fail.
        },
        "stateNotificationConfig": { # The configuration for notification of new states received from the device. # The configuration for notification of new states received from the device.
            # State updates are guaranteed to be stored in the state history, but
            # notifications to Cloud Pub/Sub are not guaranteed. For example, if
            # permissions are misconfigured or the specified topic doesn't exist, no
            # notification will be published but the state will still be stored in Cloud
            # IoT Core.
          "pubsubTopicName": "A String", # A Cloud Pub/Sub topic name. For example,
              # `projects/myProject/topics/deviceEvents`.
        },
      }

`getIamPolicy(resource, body=None, x__xgafv=None)`

    Gets the access control policy for a resource.
    Returns an empty policy if the resource exists and does not have a policy
    set.

    Args:
      resource: string, REQUIRED: The resource for which the policy is being requested.
    See the operation documentation for the appropriate value for this field. (required)
      body: object, The request body.
        The object takes the form of:

    { # Request message for `GetIamPolicy` method.
        "options": { # Encapsulates settings provided to GetIamPolicy. # OPTIONAL: A `GetPolicyOptions` object for specifying options to
            # `GetIamPolicy`.
          "requestedPolicyVersion": 42, # Optional. The policy format version to be returned.
              #
              # Valid values are 0, 1, and 3. Requests specifying an invalid value will be
              # rejected.
              #
              # Requests for policies with any conditional bindings must specify version 3.
              # Policies without any conditional bindings may specify any valid value or
              # leave the field unset.
              #
              # To learn which resources support conditions in their IAM policies, see the
              # [IAM
              # documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
        },
      }

      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # An Identity and Access Management (IAM) policy, which specifies access
          # controls for Google Cloud resources.
          #
          #
          # A `Policy` is a collection of `bindings`. A `binding` binds one or more
          # `members` to a single `role`. Members can be user accounts, service accounts,
          # Google groups, and domains (such as G Suite). A `role` is a named list of
          # permissions; each `role` can be an IAM predefined role or a user-created
          # custom role.
          #
          # For some types of Google Cloud resources, a `binding` can also specify a
          # `condition`, which is a logical expression that allows access to a resource
          # only if the expression evaluates to `true`. A condition can add constraints
          # based on attributes of the request, the resource, or both. To learn which
          # resources support conditions in their IAM policies, see the
          # [IAM documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
          #
          # **JSON example:**
          #
          #     {
          #       "bindings": [
          #         {
          #           "role": "roles/resourcemanager.organizationAdmin",
          #           "members": [
          #             "user:mike@example.com",
          #             "group:admins@example.com",
          #             "domain:google.com",
          #             "serviceAccount:my-project-id@appspot.gserviceaccount.com"
          #           ]
          #         },
          #         {
          #           "role": "roles/resourcemanager.organizationViewer",
          #           "members": [
          #             "user:eve@example.com"
          #           ],
          #           "condition": {
          #             "title": "expirable access",
          #             "description": "Does not grant access after Sep 2020",
          #             "expression": "request.time < timestamp('2020-10-01T00:00:00.000Z')",
          #           }
          #         }
          #       ],
          #       "etag": "BwWWja0YfJA=",
          #       "version": 3
          #     }
          #
          # **YAML example:**
          #
          #     bindings:
          #     - members:
          #       - user:mike@example.com
          #       - group:admins@example.com
          #       - domain:google.com
          #       - serviceAccount:my-project-id@appspot.gserviceaccount.com
          #       role: roles/resourcemanager.organizationAdmin
          #     - members:
          #       - user:eve@example.com
          #       role: roles/resourcemanager.organizationViewer
          #       condition:
          #         title: expirable access
          #         description: Does not grant access after Sep 2020
          #         expression: request.time < timestamp('2020-10-01T00:00:00.000Z')
          #     - etag: BwWWja0YfJA=
          #     - version: 3
          #
          # For a description of IAM and its features, see the
          # [IAM documentation](https://cloud.google.com/iam/docs/).
        "bindings": [ # Associates a list of `members` to a `role`. Optionally, may specify a
            # `condition` that determines how and when the `bindings` are applied. Each
            # of the `bindings` must contain at least one member.
          { # Associates `members` with a `role`.
            "condition": { # Represents a textual expression in the Common Expression Language (CEL) # The condition that is associated with this binding.
                #
                # If the condition evaluates to `true`, then this binding applies to the
                # current request.
                #
                # If the condition evaluates to `false`, then this binding does not apply to
                # the current request. However, a different role binding might grant the same
                # role to one or more of the members in this binding.
                #
                # To learn which resources support conditions in their IAM policies, see the
                # [IAM
                # documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
                # syntax. CEL is a C-like expression language. The syntax and semantics of CEL
                # are documented at https://github.com/google/cel-spec.
                #
                # Example (Comparison):
                #
                #     title: "Summary size limit"
                #     description: "Determines if a summary is less than 100 chars"
                #     expression: "document.summary.size() < 100"
                #
                # Example (Equality):
                #
                #     title: "Requestor is owner"
                #     description: "Determines if requestor is the document owner"
                #     expression: "document.owner == request.auth.claims.email"
                #
                # Example (Logic):
                #
                #     title: "Public documents"
                #     description: "Determine whether the document should be publicly visible"
                #     expression: "document.type != 'private' && document.type != 'internal'"
                #
                # Example (Data Manipulation):
                #
                #     title: "Notification string"
                #     description: "Create a notification string with a timestamp."
                #     expression: "'New message received at ' + string(document.create_time)"
                #
                # The exact variables and functions that may be referenced within an expression
                # are determined by the service that evaluates it. See the service
                # documentation for additional information.
              "description": "A String", # Optional. Description of the expression. This is a longer text which
                  # describes the expression, e.g. when hovered over it in a UI.
              "expression": "A String", # Textual representation of an expression in Common Expression Language
                  # syntax.
              "title": "A String", # Optional. Title for the expression, i.e. a short string describing
                  # its purpose. This can be used e.g. in UIs which allow to enter the
                  # expression.
              "location": "A String", # Optional. String indicating the location of the expression for error
                  # reporting, e.g. a file name and a position in the file.
            },
            "members": [ # Specifies the identities requesting access for a Cloud Platform resource.
                # `members` can have the following values:
                #
                # * `allUsers`: A special identifier that represents anyone who is
                #    on the internet; with or without a Google account.
                #
                # * `allAuthenticatedUsers`: A special identifier that represents anyone
                #    who is authenticated with a Google account or a service account.
                #
                # * `user:{emailid}`: An email address that represents a specific Google
                #    account. For example, `alice@example.com` .
                #
                #
                # * `serviceAccount:{emailid}`: An email address that represents a service
                #    account. For example, `my-other-app@appspot.gserviceaccount.com`.
                #
                # * `group:{emailid}`: An email address that represents a Google group.
                #    For example, `admins@example.com`.
                #
                # * `deleted:user:{emailid}?uid={uniqueid}`: An email address (plus unique
                #    identifier) representing a user that has been recently deleted. For
                #    example, `alice@example.com?uid=123456789012345678901`. If the user is
                #    recovered, this value reverts to `user:{emailid}` and the recovered user
                #    retains the role in the binding.
                #
                # * `deleted:serviceAccount:{emailid}?uid={uniqueid}`: An email address (plus
                #    unique identifier) representing a service account that has been recently
                #    deleted. For example,
                #    `my-other-app@appspot.gserviceaccount.com?uid=123456789012345678901`.
                #    If the service account is undeleted, this value reverts to
                #    `serviceAccount:{emailid}` and the undeleted service account retains the
                #    role in the binding.
                #
                # * `deleted:group:{emailid}?uid={uniqueid}`: An email address (plus unique
                #    identifier) representing a Google group that has been recently
                #    deleted. For example, `admins@example.com?uid=123456789012345678901`. If
                #    the group is recovered, this value reverts to `group:{emailid}` and the
                #    recovered group retains the role in the binding.
                #
                #
                # * `domain:{domain}`: The G Suite domain (primary) that represents all the
                #    users of that domain. For example, `google.com` or `example.com`.
                #
              "A String",
            ],
            "role": "A String", # Role that is assigned to `members`.
                # For example, `roles/viewer`, `roles/editor`, or `roles/owner`.
          },
        ],
        "etag": "A String", # `etag` is used for optimistic concurrency control as a way to help
            # prevent simultaneous updates of a policy from overwriting each other.
            # It is strongly suggested that systems make use of the `etag` in the
            # read-modify-write cycle to perform policy updates in order to avoid race
            # conditions: An `etag` is returned in the response to `getIamPolicy`, and
            # systems are expected to put that etag in the request to `setIamPolicy` to
            # ensure that their change will be applied to the same version of the policy.
            #
            # **Important:** If you use IAM Conditions, you must include the `etag` field
            # whenever you call `setIamPolicy`. If you omit this field, then IAM allows
            # you to overwrite a version `3` policy with a version `1` policy, and all of
            # the conditions in the version `3` policy are lost.
        "version": 42, # Specifies the format of the policy.
            #
            # Valid values are `0`, `1`, and `3`. Requests that specify an invalid value
            # are rejected.
            #
            # Any operation that affects conditional role bindings must specify version
            # `3`. This requirement applies to the following operations:
            #
            # * Getting a policy that includes a conditional role binding
            # * Adding a conditional role binding to a policy
            # * Changing a conditional role binding in a policy
            # * Removing any role binding, with or without a condition, from a policy
            #   that includes conditions
            #
            # **Important:** If you use IAM Conditions, you must include the `etag` field
            # whenever you call `setIamPolicy`. If you omit this field, then IAM allows
            # you to overwrite a version `3` policy with a version `1` policy, and all of
            # the conditions in the version `3` policy are lost.
            #
            # If a policy does not include any conditions, operations on that policy may
            # specify any valid version or leave the field unset.
            #
            # To learn which resources support conditions in their IAM policies, see the
            # [IAM documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
      }

`list(parent, pageToken=None, pageSize=None, x__xgafv=None)`

    Lists device registries.

    Args:
      parent: string, Required. The project and cloud region path. For example,
    `projects/example-project/locations/us-central1`. (required)
      pageToken: string, The value returned by the last `ListDeviceRegistriesResponse`; indicates
    that this is a continuation of a prior `ListDeviceRegistries` call and
    the system should return the next page of data.
      pageSize: integer, The maximum number of registries to return in the response. If this value
    is zero, the service will select a default size. A call may return fewer
    objects than requested. A non-empty `next_page_token` in the response
    indicates that more data is available.
      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # Response for `ListDeviceRegistries`.
        "deviceRegistries": [ # The registries that matched the query.
          { # A container for a group of devices.
            "credentials": [ # The credentials used to verify the device credentials. No more than 10
                # credentials can be bound to a single registry at a time. The verification
                # process occurs at the time of device creation or update. If this field is
                # empty, no verification is performed. Otherwise, the credentials of a newly
                # created device or added credentials of an updated device should be signed
                # with one of these registry credentials.
                #
                # Note, however, that existing devices will never be affected by
                # modifications to this list of credentials: after a device has been
                # successfully created in a registry, it should be able to connect even if
                # its registry credentials are revoked, deleted, or modified.
              { # A server-stored registry credential used to validate device credentials.
                "publicKeyCertificate": { # A public key certificate format and data. # A public key certificate used to verify the device credentials.
                  "x509Details": { # Details of an X.509 certificate. For informational purposes only. # [Output only] The certificate details. Used only for X.509 certificates.
                    "signatureAlgorithm": "A String", # The algorithm used to sign the certificate.
                    "startTime": "A String", # The time the certificate becomes valid.
                    "expiryTime": "A String", # The time the certificate becomes invalid.
                    "subject": "A String", # The entity the certificate and public key belong to.
                    "issuer": "A String", # The entity that signed the certificate.
                    "publicKeyType": "A String", # The type of public key in the certificate.
                  },
                  "format": "A String", # The certificate format.
                  "certificate": "A String", # The certificate data.
                },
              },
            ],
            "name": "A String", # The resource path name. For example,
                # `projects/example-project/locations/us-central1/registries/my-registry`.
            "eventNotificationConfigs": [ # The configuration for notification of telemetry events received from the
                # device. All telemetry events that were successfully published by the
                # device and acknowledged by Cloud IoT Core are guaranteed to be
                # delivered to Cloud Pub/Sub. If multiple configurations match a message,
                # only the first matching configuration is used. If you try to publish a
                # device telemetry event using MQTT without specifying a Cloud Pub/Sub topic
                # for the device's registry, the connection closes automatically. If you try
                # to do so using an HTTP connection, an error is returned. Up to 10
                # configurations may be provided.
              { # The configuration for forwarding telemetry events.
                "subfolderMatches": "A String", # If the subfolder name matches this string exactly, this configuration will
                    # be used. The string must not include the leading '/' character. If empty,
                    # all strings are matched. This field is used only for telemetry events;
                    # subfolders are not supported for state changes.
                "pubsubTopicName": "A String", # A Cloud Pub/Sub topic name. For example,
                    # `projects/myProject/topics/deviceEvents`.
              },
            ],
            "logLevel": "A String", # **Beta Feature**
                #
                # The default logging verbosity for activity from devices in this registry.
                # The verbosity level can be overridden by Device.log_level.
            "httpConfig": { # The configuration of the HTTP bridge for a device registry. # The DeviceService (HTTP) configuration for this device registry.
              "httpEnabledState": "A String", # If enabled, allows devices to use DeviceService via the HTTP protocol.
                  # Otherwise, any requests to DeviceService will fail for this registry.
            },
            "id": "A String", # The identifier of this device registry. For example, `myRegistry`.
            "mqttConfig": { # The configuration of MQTT for a device registry. # The MQTT configuration for this device registry.
              "mqttEnabledState": "A String", # If enabled, allows connections using the MQTT protocol. Otherwise, MQTT
                  # connections to this registry will fail.
            },
            "stateNotificationConfig": { # The configuration for notification of new states received from the device. # The configuration for notification of new states received from the device.
                # State updates are guaranteed to be stored in the state history, but
                # notifications to Cloud Pub/Sub are not guaranteed. For example, if
                # permissions are misconfigured or the specified topic doesn't exist, no
                # notification will be published but the state will still be stored in Cloud
                # IoT Core.
              "pubsubTopicName": "A String", # A Cloud Pub/Sub topic name. For example,
                  # `projects/myProject/topics/deviceEvents`.
            },
          },
        ],
        "nextPageToken": "A String", # If not empty, indicates that there may be more registries that match the
            # request; this value should be passed in a new
            # `ListDeviceRegistriesRequest`.
      }

`list_next(previous_request, previous_response)`

    Retrieves the next page of results.

    Args:
      previous_request: The request for the previous page. (required)
      previous_response: The response from the request for the previous page. (required)

    Returns:
      A request object that you can call 'execute()' on to request the next
      page. Returns None if there are no more items in the collection.

`patch(name, body=None, updateMask=None, x__xgafv=None)`

    Updates a device registry configuration.

    Args:
      name: string, The resource path name. For example,
    `projects/example-project/locations/us-central1/registries/my-registry`. (required)
      body: object, The request body.
        The object takes the form of:

    { # A container for a group of devices.
      "credentials": [ # The credentials used to verify the device credentials. No more than 10
          # credentials can be bound to a single registry at a time. The verification
          # process occurs at the time of device creation or update. If this field is
          # empty, no verification is performed. Otherwise, the credentials of a newly
          # created device or added credentials of an updated device should be signed
          # with one of these registry credentials.
          #
          # Note, however, that existing devices will never be affected by
          # modifications to this list of credentials: after a device has been
          # successfully created in a registry, it should be able to connect even if
          # its registry credentials are revoked, deleted, or modified.
        { # A server-stored registry credential used to validate device credentials.
          "publicKeyCertificate": { # A public key certificate format and data. # A public key certificate used to verify the device credentials.
            "x509Details": { # Details of an X.509 certificate. For informational purposes only. # [Output only] The certificate details. Used only for X.509 certificates.
              "signatureAlgorithm": "A String", # The algorithm used to sign the certificate.
              "startTime": "A String", # The time the certificate becomes valid.
              "expiryTime": "A String", # The time the certificate becomes invalid.
              "subject": "A String", # The entity the certificate and public key belong to.
              "issuer": "A String", # The entity that signed the certificate.
              "publicKeyType": "A String", # The type of public key in the certificate.
            },
            "format": "A String", # The certificate format.
            "certificate": "A String", # The certificate data.
          },
        },
      ],
      "name": "A String", # The resource path name. For example,
          # `projects/example-project/locations/us-central1/registries/my-registry`.
      "eventNotificationConfigs": [ # The configuration for notification of telemetry events received from the
          # device. All telemetry events that were successfully published by the
          # device and acknowledged by Cloud IoT Core are guaranteed to be
          # delivered to Cloud Pub/Sub. If multiple configurations match a message,
          # only the first matching configuration is used. If you try to publish a
          # device telemetry event using MQTT without specifying a Cloud Pub/Sub topic
          # for the device's registry, the connection closes automatically. If you try
          # to do so using an HTTP connection, an error is returned. Up to 10
          # configurations may be provided.
        { # The configuration for forwarding telemetry events.
          "subfolderMatches": "A String", # If the subfolder name matches this string exactly, this configuration will
              # be used. The string must not include the leading '/' character. If empty,
              # all strings are matched. This field is used only for telemetry events;
              # subfolders are not supported for state changes.
          "pubsubTopicName": "A String", # A Cloud Pub/Sub topic name. For example,
              # `projects/myProject/topics/deviceEvents`.
        },
      ],
      "logLevel": "A String", # **Beta Feature**
          #
          # The default logging verbosity for activity from devices in this registry.
          # The verbosity level can be overridden by Device.log_level.
      "httpConfig": { # The configuration of the HTTP bridge for a device registry. # The DeviceService (HTTP) configuration for this device registry.
        "httpEnabledState": "A String", # If enabled, allows devices to use DeviceService via the HTTP protocol.
            # Otherwise, any requests to DeviceService will fail for this registry.
      },
      "id": "A String", # The identifier of this device registry. For example, `myRegistry`.
      "mqttConfig": { # The configuration of MQTT for a device registry. # The MQTT configuration for this device registry.
        "mqttEnabledState": "A String", # If enabled, allows connections using the MQTT protocol. Otherwise, MQTT
            # connections to this registry will fail.
      },
      "stateNotificationConfig": { # The configuration for notification of new states received from the device. # The configuration for notification of new states received from the device.
          # State updates are guaranteed to be stored in the state history, but
          # notifications to Cloud Pub/Sub are not guaranteed. For example, if
          # permissions are misconfigured or the specified topic doesn't exist, no
          # notification will be published but the state will still be stored in Cloud
          # IoT Core.
        "pubsubTopicName": "A String", # A Cloud Pub/Sub topic name. For example,
            # `projects/myProject/topics/deviceEvents`.
      },
    }

      updateMask: string, Required. Only updates the `device_registry` fields indicated by this mask.
    The field mask must not be empty, and it must not contain fields that
    are immutable or only set by the server.
    Mutable top-level fields: `event_notification_config`, `http_config`,
    `mqtt_config`, and `state_notification_config`.
      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # A container for a group of devices.
        "credentials": [ # The credentials used to verify the device credentials. No more than 10
            # credentials can be bound to a single registry at a time. The verification
            # process occurs at the time of device creation or update. If this field is
            # empty, no verification is performed. Otherwise, the credentials of a newly
            # created device or added credentials of an updated device should be signed
            # with one of these registry credentials.
            #
            # Note, however, that existing devices will never be affected by
            # modifications to this list of credentials: after a device has been
            # successfully created in a registry, it should be able to connect even if
            # its registry credentials are revoked, deleted, or modified.
          { # A server-stored registry credential used to validate device credentials.
            "publicKeyCertificate": { # A public key certificate format and data. # A public key certificate used to verify the device credentials.
              "x509Details": { # Details of an X.509 certificate. For informational purposes only. # [Output only] The certificate details. Used only for X.509 certificates.
                "signatureAlgorithm": "A String", # The algorithm used to sign the certificate.
                "startTime": "A String", # The time the certificate becomes valid.
                "expiryTime": "A String", # The time the certificate becomes invalid.
                "subject": "A String", # The entity the certificate and public key belong to.
                "issuer": "A String", # The entity that signed the certificate.
                "publicKeyType": "A String", # The type of public key in the certificate.
              },
              "format": "A String", # The certificate format.
              "certificate": "A String", # The certificate data.
            },
          },
        ],
        "name": "A String", # The resource path name. For example,
            # `projects/example-project/locations/us-central1/registries/my-registry`.
        "eventNotificationConfigs": [ # The configuration for notification of telemetry events received from the
            # device. All telemetry events that were successfully published by the
            # device and acknowledged by Cloud IoT Core are guaranteed to be
            # delivered to Cloud Pub/Sub. If multiple configurations match a message,
            # only the first matching configuration is used. If you try to publish a
            # device telemetry event using MQTT without specifying a Cloud Pub/Sub topic
            # for the device's registry, the connection closes automatically. If you try
            # to do so using an HTTP connection, an error is returned. Up to 10
            # configurations may be provided.
          { # The configuration for forwarding telemetry events.
            "subfolderMatches": "A String", # If the subfolder name matches this string exactly, this configuration will
                # be used. The string must not include the leading '/' character. If empty,
                # all strings are matched. This field is used only for telemetry events;
                # subfolders are not supported for state changes.
            "pubsubTopicName": "A String", # A Cloud Pub/Sub topic name. For example,
                # `projects/myProject/topics/deviceEvents`.
          },
        ],
        "logLevel": "A String", # **Beta Feature**
            #
            # The default logging verbosity for activity from devices in this registry.
            # The verbosity level can be overridden by Device.log_level.
        "httpConfig": { # The configuration of the HTTP bridge for a device registry. # The DeviceService (HTTP) configuration for this device registry.
          "httpEnabledState": "A String", # If enabled, allows devices to use DeviceService via the HTTP protocol.
              # Otherwise, any requests to DeviceService will fail for this registry.
        },
        "id": "A String", # The identifier of this device registry. For example, `myRegistry`.
        "mqttConfig": { # The configuration of MQTT for a device registry. # The MQTT configuration for this device registry.
          "mqttEnabledState": "A String", # If enabled, allows connections using the MQTT protocol. Otherwise, MQTT
              # connections to this registry will fail.
        },
        "stateNotificationConfig": { # The configuration for notification of new states received from the device. # The configuration for notification of new states received from the device.
            # State updates are guaranteed to be stored in the state history, but
            # notifications to Cloud Pub/Sub are not guaranteed. For example, if
            # permissions are misconfigured or the specified topic doesn't exist, no
            # notification will be published but the state will still be stored in Cloud
            # IoT Core.
          "pubsubTopicName": "A String", # A Cloud Pub/Sub topic name. For example,
              # `projects/myProject/topics/deviceEvents`.
        },
      }

`setIamPolicy(resource, body=None, x__xgafv=None)`

    Sets the access control policy on the specified resource. Replaces any
    existing policy.

    Args:
      resource: string, REQUIRED: The resource for which the policy is being specified.
    See the operation documentation for the appropriate value for this field. (required)
      body: object, The request body.
        The object takes the form of:

    { # Request message for `SetIamPolicy` method.
        "policy": { # An Identity and Access Management (IAM) policy, which specifies access # 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.
            # controls for Google Cloud resources.
            #
            #
            # A `Policy` is a collection of `bindings`. A `binding` binds one or more
            # `members` to a single `role`. Members can be user accounts, service accounts,
            # Google groups, and domains (such as G Suite). A `role` is a named list of
            # permissions; each `role` can be an IAM predefined role or a user-created
            # custom role.
            #
            # For some types of Google Cloud resources, a `binding` can also specify a
            # `condition`, which is a logical expression that allows access to a resource
            # only if the expression evaluates to `true`. A condition can add constraints
            # based on attributes of the request, the resource, or both. To learn which
            # resources support conditions in their IAM policies, see the
            # [IAM documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
            #
            # **JSON example:**
            #
            #     {
            #       "bindings": [
            #         {
            #           "role": "roles/resourcemanager.organizationAdmin",
            #           "members": [
            #             "user:mike@example.com",
            #             "group:admins@example.com",
            #             "domain:google.com",
            #             "serviceAccount:my-project-id@appspot.gserviceaccount.com"
            #           ]
            #         },
            #         {
            #           "role": "roles/resourcemanager.organizationViewer",
            #           "members": [
            #             "user:eve@example.com"
            #           ],
            #           "condition": {
            #             "title": "expirable access",
            #             "description": "Does not grant access after Sep 2020",
            #             "expression": "request.time < timestamp('2020-10-01T00:00:00.000Z')",
            #           }
            #         }
            #       ],
            #       "etag": "BwWWja0YfJA=",
            #       "version": 3
            #     }
            #
            # **YAML example:**
            #
            #     bindings:
            #     - members:
            #       - user:mike@example.com
            #       - group:admins@example.com
            #       - domain:google.com
            #       - serviceAccount:my-project-id@appspot.gserviceaccount.com
            #       role: roles/resourcemanager.organizationAdmin
            #     - members:
            #       - user:eve@example.com
            #       role: roles/resourcemanager.organizationViewer
            #       condition:
            #         title: expirable access
            #         description: Does not grant access after Sep 2020
            #         expression: request.time < timestamp('2020-10-01T00:00:00.000Z')
            #     - etag: BwWWja0YfJA=
            #     - version: 3
            #
            # For a description of IAM and its features, see the
            # [IAM documentation](https://cloud.google.com/iam/docs/).
          "bindings": [ # Associates a list of `members` to a `role`. Optionally, may specify a
              # `condition` that determines how and when the `bindings` are applied. Each
              # of the `bindings` must contain at least one member.
            { # Associates `members` with a `role`.
              "condition": { # Represents a textual expression in the Common Expression Language (CEL) # The condition that is associated with this binding.
                  #
                  # If the condition evaluates to `true`, then this binding applies to the
                  # current request.
                  #
                  # If the condition evaluates to `false`, then this binding does not apply to
                  # the current request. However, a different role binding might grant the same
                  # role to one or more of the members in this binding.
                  #
                  # To learn which resources support conditions in their IAM policies, see the
                  # [IAM
                  # documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
                  # syntax. CEL is a C-like expression language. The syntax and semantics of CEL
                  # are documented at https://github.com/google/cel-spec.
                  #
                  # Example (Comparison):
                  #
                  #     title: "Summary size limit"
                  #     description: "Determines if a summary is less than 100 chars"
                  #     expression: "document.summary.size() < 100"
                  #
                  # Example (Equality):
                  #
                  #     title: "Requestor is owner"
                  #     description: "Determines if requestor is the document owner"
                  #     expression: "document.owner == request.auth.claims.email"
                  #
                  # Example (Logic):
                  #
                  #     title: "Public documents"
                  #     description: "Determine whether the document should be publicly visible"
                  #     expression: "document.type != 'private' && document.type != 'internal'"
                  #
                  # Example (Data Manipulation):
                  #
                  #     title: "Notification string"
                  #     description: "Create a notification string with a timestamp."
                  #     expression: "'New message received at ' + string(document.create_time)"
                  #
                  # The exact variables and functions that may be referenced within an expression
                  # are determined by the service that evaluates it. See the service
                  # documentation for additional information.
                "description": "A String", # Optional. Description of the expression. This is a longer text which
                    # describes the expression, e.g. when hovered over it in a UI.
                "expression": "A String", # Textual representation of an expression in Common Expression Language
                    # syntax.
                "title": "A String", # Optional. Title for the expression, i.e. a short string describing
                    # its purpose. This can be used e.g. in UIs which allow to enter the
                    # expression.
                "location": "A String", # Optional. String indicating the location of the expression for error
                    # reporting, e.g. a file name and a position in the file.
              },
              "members": [ # Specifies the identities requesting access for a Cloud Platform resource.
                  # `members` can have the following values:
                  #
                  # * `allUsers`: A special identifier that represents anyone who is
                  #    on the internet; with or without a Google account.
                  #
                  # * `allAuthenticatedUsers`: A special identifier that represents anyone
                  #    who is authenticated with a Google account or a service account.
                  #
                  # * `user:{emailid}`: An email address that represents a specific Google
                  #    account. For example, `alice@example.com` .
                  #
                  #
                  # * `serviceAccount:{emailid}`: An email address that represents a service
                  #    account. For example, `my-other-app@appspot.gserviceaccount.com`.
                  #
                  # * `group:{emailid}`: An email address that represents a Google group.
                  #    For example, `admins@example.com`.
                  #
                  # * `deleted:user:{emailid}?uid={uniqueid}`: An email address (plus unique
                  #    identifier) representing a user that has been recently deleted. For
                  #    example, `alice@example.com?uid=123456789012345678901`. If the user is
                  #    recovered, this value reverts to `user:{emailid}` and the recovered user
                  #    retains the role in the binding.
                  #
                  # * `deleted:serviceAccount:{emailid}?uid={uniqueid}`: An email address (plus
                  #    unique identifier) representing a service account that has been recently
                  #    deleted. For example,
                  #    `my-other-app@appspot.gserviceaccount.com?uid=123456789012345678901`.
                  #    If the service account is undeleted, this value reverts to
                  #    `serviceAccount:{emailid}` and the undeleted service account retains the
                  #    role in the binding.
                  #
                  # * `deleted:group:{emailid}?uid={uniqueid}`: An email address (plus unique
                  #    identifier) representing a Google group that has been recently
                  #    deleted. For example, `admins@example.com?uid=123456789012345678901`. If
                  #    the group is recovered, this value reverts to `group:{emailid}` and the
                  #    recovered group retains the role in the binding.
                  #
                  #
                  # * `domain:{domain}`: The G Suite domain (primary) that represents all the
                  #    users of that domain. For example, `google.com` or `example.com`.
                  #
                "A String",
              ],
              "role": "A String", # Role that is assigned to `members`.
                  # For example, `roles/viewer`, `roles/editor`, or `roles/owner`.
            },
          ],
          "etag": "A String", # `etag` is used for optimistic concurrency control as a way to help
              # prevent simultaneous updates of a policy from overwriting each other.
              # It is strongly suggested that systems make use of the `etag` in the
              # read-modify-write cycle to perform policy updates in order to avoid race
              # conditions: An `etag` is returned in the response to `getIamPolicy`, and
              # systems are expected to put that etag in the request to `setIamPolicy` to
              # ensure that their change will be applied to the same version of the policy.
              #
              # **Important:** If you use IAM Conditions, you must include the `etag` field
              # whenever you call `setIamPolicy`. If you omit this field, then IAM allows
              # you to overwrite a version `3` policy with a version `1` policy, and all of
              # the conditions in the version `3` policy are lost.
          "version": 42, # Specifies the format of the policy.
              #
              # Valid values are `0`, `1`, and `3`. Requests that specify an invalid value
              # are rejected.
              #
              # Any operation that affects conditional role bindings must specify version
              # `3`. This requirement applies to the following operations:
              #
              # * Getting a policy that includes a conditional role binding
              # * Adding a conditional role binding to a policy
              # * Changing a conditional role binding in a policy
              # * Removing any role binding, with or without a condition, from a policy
              #   that includes conditions
              #
              # **Important:** If you use IAM Conditions, you must include the `etag` field
              # whenever you call `setIamPolicy`. If you omit this field, then IAM allows
              # you to overwrite a version `3` policy with a version `1` policy, and all of
              # the conditions in the version `3` policy are lost.
              #
              # If a policy does not include any conditions, operations on that policy may
              # specify any valid version or leave the field unset.
              #
              # To learn which resources support conditions in their IAM policies, see the
              # [IAM documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
        },
      }

      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # An Identity and Access Management (IAM) policy, which specifies access
          # controls for Google Cloud resources.
          #
          #
          # A `Policy` is a collection of `bindings`. A `binding` binds one or more
          # `members` to a single `role`. Members can be user accounts, service accounts,
          # Google groups, and domains (such as G Suite). A `role` is a named list of
          # permissions; each `role` can be an IAM predefined role or a user-created
          # custom role.
          #
          # For some types of Google Cloud resources, a `binding` can also specify a
          # `condition`, which is a logical expression that allows access to a resource
          # only if the expression evaluates to `true`. A condition can add constraints
          # based on attributes of the request, the resource, or both. To learn which
          # resources support conditions in their IAM policies, see the
          # [IAM documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
          #
          # **JSON example:**
          #
          #     {
          #       "bindings": [
          #         {
          #           "role": "roles/resourcemanager.organizationAdmin",
          #           "members": [
          #             "user:mike@example.com",
          #             "group:admins@example.com",
          #             "domain:google.com",
          #             "serviceAccount:my-project-id@appspot.gserviceaccount.com"
          #           ]
          #         },
          #         {
          #           "role": "roles/resourcemanager.organizationViewer",
          #           "members": [
          #             "user:eve@example.com"
          #           ],
          #           "condition": {
          #             "title": "expirable access",
          #             "description": "Does not grant access after Sep 2020",
          #             "expression": "request.time < timestamp('2020-10-01T00:00:00.000Z')",
          #           }
          #         }
          #       ],
          #       "etag": "BwWWja0YfJA=",
          #       "version": 3
          #     }
          #
          # **YAML example:**
          #
          #     bindings:
          #     - members:
          #       - user:mike@example.com
          #       - group:admins@example.com
          #       - domain:google.com
          #       - serviceAccount:my-project-id@appspot.gserviceaccount.com
          #       role: roles/resourcemanager.organizationAdmin
          #     - members:
          #       - user:eve@example.com
          #       role: roles/resourcemanager.organizationViewer
          #       condition:
          #         title: expirable access
          #         description: Does not grant access after Sep 2020
          #         expression: request.time < timestamp('2020-10-01T00:00:00.000Z')
          #     - etag: BwWWja0YfJA=
          #     - version: 3
          #
          # For a description of IAM and its features, see the
          # [IAM documentation](https://cloud.google.com/iam/docs/).
        "bindings": [ # Associates a list of `members` to a `role`. Optionally, may specify a
            # `condition` that determines how and when the `bindings` are applied. Each
            # of the `bindings` must contain at least one member.
          { # Associates `members` with a `role`.
            "condition": { # Represents a textual expression in the Common Expression Language (CEL) # The condition that is associated with this binding.
                #
                # If the condition evaluates to `true`, then this binding applies to the
                # current request.
                #
                # If the condition evaluates to `false`, then this binding does not apply to
                # the current request. However, a different role binding might grant the same
                # role to one or more of the members in this binding.
                #
                # To learn which resources support conditions in their IAM policies, see the
                # [IAM
                # documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
                # syntax. CEL is a C-like expression language. The syntax and semantics of CEL
                # are documented at https://github.com/google/cel-spec.
                #
                # Example (Comparison):
                #
                #     title: "Summary size limit"
                #     description: "Determines if a summary is less than 100 chars"
                #     expression: "document.summary.size() < 100"
                #
                # Example (Equality):
                #
                #     title: "Requestor is owner"
                #     description: "Determines if requestor is the document owner"
                #     expression: "document.owner == request.auth.claims.email"
                #
                # Example (Logic):
                #
                #     title: "Public documents"
                #     description: "Determine whether the document should be publicly visible"
                #     expression: "document.type != 'private' && document.type != 'internal'"
                #
                # Example (Data Manipulation):
                #
                #     title: "Notification string"
                #     description: "Create a notification string with a timestamp."
                #     expression: "'New message received at ' + string(document.create_time)"
                #
                # The exact variables and functions that may be referenced within an expression
                # are determined by the service that evaluates it. See the service
                # documentation for additional information.
              "description": "A String", # Optional. Description of the expression. This is a longer text which
                  # describes the expression, e.g. when hovered over it in a UI.
              "expression": "A String", # Textual representation of an expression in Common Expression Language
                  # syntax.
              "title": "A String", # Optional. Title for the expression, i.e. a short string describing
                  # its purpose. This can be used e.g. in UIs which allow to enter the
                  # expression.
              "location": "A String", # Optional. String indicating the location of the expression for error
                  # reporting, e.g. a file name and a position in the file.
            },
            "members": [ # Specifies the identities requesting access for a Cloud Platform resource.
                # `members` can have the following values:
                #
                # * `allUsers`: A special identifier that represents anyone who is
                #    on the internet; with or without a Google account.
                #
                # * `allAuthenticatedUsers`: A special identifier that represents anyone
                #    who is authenticated with a Google account or a service account.
                #
                # * `user:{emailid}`: An email address that represents a specific Google
                #    account. For example, `alice@example.com` .
                #
                #
                # * `serviceAccount:{emailid}`: An email address that represents a service
                #    account. For example, `my-other-app@appspot.gserviceaccount.com`.
                #
                # * `group:{emailid}`: An email address that represents a Google group.
                #    For example, `admins@example.com`.
                #
                # * `deleted:user:{emailid}?uid={uniqueid}`: An email address (plus unique
                #    identifier) representing a user that has been recently deleted. For
                #    example, `alice@example.com?uid=123456789012345678901`. If the user is
                #    recovered, this value reverts to `user:{emailid}` and the recovered user
                #    retains the role in the binding.
                #
                # * `deleted:serviceAccount:{emailid}?uid={uniqueid}`: An email address (plus
                #    unique identifier) representing a service account that has been recently
                #    deleted. For example,
                #    `my-other-app@appspot.gserviceaccount.com?uid=123456789012345678901`.
                #    If the service account is undeleted, this value reverts to
                #    `serviceAccount:{emailid}` and the undeleted service account retains the
                #    role in the binding.
                #
                # * `deleted:group:{emailid}?uid={uniqueid}`: An email address (plus unique
                #    identifier) representing a Google group that has been recently
                #    deleted. For example, `admins@example.com?uid=123456789012345678901`. If
                #    the group is recovered, this value reverts to `group:{emailid}` and the
                #    recovered group retains the role in the binding.
                #
                #
                # * `domain:{domain}`: The G Suite domain (primary) that represents all the
                #    users of that domain. For example, `google.com` or `example.com`.
                #
              "A String",
            ],
            "role": "A String", # Role that is assigned to `members`.
                # For example, `roles/viewer`, `roles/editor`, or `roles/owner`.
          },
        ],
        "etag": "A String", # `etag` is used for optimistic concurrency control as a way to help
            # prevent simultaneous updates of a policy from overwriting each other.
            # It is strongly suggested that systems make use of the `etag` in the
            # read-modify-write cycle to perform policy updates in order to avoid race
            # conditions: An `etag` is returned in the response to `getIamPolicy`, and
            # systems are expected to put that etag in the request to `setIamPolicy` to
            # ensure that their change will be applied to the same version of the policy.
            #
            # **Important:** If you use IAM Conditions, you must include the `etag` field
            # whenever you call `setIamPolicy`. If you omit this field, then IAM allows
            # you to overwrite a version `3` policy with a version `1` policy, and all of
            # the conditions in the version `3` policy are lost.
        "version": 42, # Specifies the format of the policy.
            #
            # Valid values are `0`, `1`, and `3`. Requests that specify an invalid value
            # are rejected.
            #
            # Any operation that affects conditional role bindings must specify version
            # `3`. This requirement applies to the following operations:
            #
            # * Getting a policy that includes a conditional role binding
            # * Adding a conditional role binding to a policy
            # * Changing a conditional role binding in a policy
            # * Removing any role binding, with or without a condition, from a policy
            #   that includes conditions
            #
            # **Important:** If you use IAM Conditions, you must include the `etag` field
            # whenever you call `setIamPolicy`. If you omit this field, then IAM allows
            # you to overwrite a version `3` policy with a version `1` policy, and all of
            # the conditions in the version `3` policy are lost.
            #
            # If a policy does not include any conditions, operations on that policy may
            # specify any valid version or leave the field unset.
            #
            # To learn which resources support conditions in their IAM policies, see the
            # [IAM documentation](https://cloud.google.com/iam/help/conditions/resource-policies).
      }

`testIamPermissions(resource, body=None, x__xgafv=None)`

    Returns permissions that a caller has on the specified resource.
    If the resource does not exist, this will return an empty set of
    permissions, not a NOT_FOUND error.

    Args:
      resource: string, REQUIRED: The resource for which the policy detail is being requested.
    See the operation documentation for the appropriate value for this field. (required)
      body: object, The request body.
        The object takes the form of:

    { # Request message for `TestIamPermissions` method.
        "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).
          "A String",
        ],
      }

      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # Response message for `TestIamPermissions` method.
        "permissions": [ # A subset of `TestPermissionsRequest.permissions` that the caller is
            # allowed.
          "A String",
        ],
      }

`unbindDeviceFromGateway(parent, body=None, x__xgafv=None)`

    Deletes the association between the device and the gateway.

    Args:
      parent: string, Required. The name of the registry. For example,
    `projects/example-project/locations/us-central1/registries/my-registry`. (required)
      body: object, The request body.
        The object takes the form of:

    { # Request for `UnbindDeviceFromGateway`.
        "gatewayId": "A String", # Required. The value of `gateway_id` can be either the device numeric ID or the
            # user-defined device identifier.
        "deviceId": "A String", # Required. The device to disassociate from the specified gateway. The value of
            # `device_id` can be either the device numeric ID or the user-defined device
            # identifier.
      }

      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # Response for `UnbindDeviceFromGateway`.
      }