# Cloud DNS API . changes

## Instance Methods

Close httplib2 connections.

Atomically updates the ResourceRecordSet collection.

Fetches the representation of an existing Change.

Enumerates Changes to a ResourceRecordSet collection.

Retrieves the next page of results.

### Method Details

`close()`

    Close httplib2 connections.

`create(project, managedZone, body=None, clientOperationId=None, x__xgafv=None)`

    Atomically updates the ResourceRecordSet collection.

    Args:
      project: string, Identifies the project addressed by this request. (required)
      managedZone: string, Identifies the managed zone addressed by this request. Can be the managed zone name or ID. (required)
      body: object, The request body.
        The object takes the form of:

    { # A Change represents a set of ResourceRecordSet additions and deletions applied atomically to a ManagedZone. ResourceRecordSets within a ManagedZone are modified by creating a new Change element in the Changes collection. In turn the Changes collection also records the past modifications to the ResourceRecordSets in a ManagedZone. The current state of the ManagedZone is the sum effect of applying all Change elements in the Changes collection in sequence.
      "additions": [ # Which ResourceRecordSets to add?
        { # A unit of data that is returned by the DNS servers.
          "kind": "dns#resourceRecordSet",
          "name": "A String", # For example, www.example.com.
          "routingPolicy": { # A RRSetRoutingPolicy represents ResourceRecordSet data that is returned dynamically with the response varying based on configured properties such as geolocation or by weighted random selection. # Configures dynamic query responses based on geo location of querying user or a weighted round robin based routing policy. A ResourceRecordSet should only have either rrdata (static) or routing_policy (dynamic). An error is returned otherwise.
            "geo": { # Configures a RRSetRoutingPolicy that routes based on the geo location of the querying user.
              "enableFencing": True or False, # Without fencing, if health check fails for all configured items in the current geo bucket, we'll failover to the next nearest geo bucket. With fencing, if health check is enabled, as long as some targets in the current geo bucket are healthy, we'll return only the healthy targets. However, if they're all unhealthy, we won't failover to the next nearest bucket, we'll simply return all the items in the current bucket even though they're unhealthy.
              "items": [ # The primary geo routing configuration. If there are multiple items with the same location, an error is returned instead.
                { # ResourceRecordSet data for one geo location.
                  "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # For A and AAAA types only. Endpoints to return in the query result only if they are healthy. These can be specified along with rrdata within this item.
                    "internalLoadBalancers": [
                      {
                        "ipAddress": "A String", # The frontend IP address of the
                        "ipProtocol": "A String",
                        "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                        "loadBalancerType": "A String",
                        "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                        "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                        "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                        "region": "A String", # The region for regional ILBs.
                      },
                    ],
                  },
                  "kind": "dns#rRSetRoutingPolicyGeoPolicyGeoPolicyItem",
                  "location": "A String", # The geo-location granularity is a GCP region. This location string should correspond to a GCP region. e.g. "us-east1", "southamerica-east1", "asia-east1", etc.
                  "rrdatas": [
                    "A String",
                  ],
                  "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                    "A String",
                  ],
                },
              ],
              "kind": "dns#rRSetRoutingPolicyGeoPolicy",
            },
            "kind": "dns#rRSetRoutingPolicy",
            "primaryBackup": { # Configures a RRSetRoutingPolicy such that all queries are responded with the primary_targets if they are healthy. And if all of them are unhealthy, then we fallback to a geo localized policy.
              "backupGeoTargets": { # Configures a RRSetRoutingPolicy that routes based on the geo location of the querying user. # Backup targets provide a regional failover policy for the otherwise global primary targets. If serving state is set to BACKUP, this policy essentially becomes a geo routing policy.
                "enableFencing": True or False, # Without fencing, if health check fails for all configured items in the current geo bucket, we'll failover to the next nearest geo bucket. With fencing, if health check is enabled, as long as some targets in the current geo bucket are healthy, we'll return only the healthy targets. However, if they're all unhealthy, we won't failover to the next nearest bucket, we'll simply return all the items in the current bucket even though they're unhealthy.
                "items": [ # The primary geo routing configuration. If there are multiple items with the same location, an error is returned instead.
                  { # ResourceRecordSet data for one geo location.
                    "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # For A and AAAA types only. Endpoints to return in the query result only if they are healthy. These can be specified along with rrdata within this item.
                      "internalLoadBalancers": [
                        {
                          "ipAddress": "A String", # The frontend IP address of the
                          "ipProtocol": "A String",
                          "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                          "loadBalancerType": "A String",
                          "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                          "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                          "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                          "region": "A String", # The region for regional ILBs.
                        },
                      ],
                    },
                    "kind": "dns#rRSetRoutingPolicyGeoPolicyGeoPolicyItem",
                    "location": "A String", # The geo-location granularity is a GCP region. This location string should correspond to a GCP region. e.g. "us-east1", "southamerica-east1", "asia-east1", etc.
                    "rrdatas": [
                      "A String",
                    ],
                    "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                      "A String",
                    ],
                  },
                ],
                "kind": "dns#rRSetRoutingPolicyGeoPolicy",
              },
              "kind": "dns#rRSetRoutingPolicyPrimaryBackupPolicy",
              "primaryTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response.
                "internalLoadBalancers": [
                  {
                    "ipAddress": "A String", # The frontend IP address of the
                    "ipProtocol": "A String",
                    "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                    "loadBalancerType": "A String",
                    "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                    "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                    "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                    "region": "A String", # The region for regional ILBs.
                  },
                ],
              },
              "trickleTraffic": 3.14, # When serving state is PRIMARY, this field provides the option of sending a small percentage of the traffic to the backup targets.
            },
            "wrr": { # Configures a RRSetRoutingPolicy that routes in a weighted round robin fashion.
              "items": [
                { # A routing block which contains the routing information for one WRR item.
                  "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # endpoints that need to be health checked before making the routing decision. The unhealthy endpoints will be omitted from the result. If all endpoints within a buckete are unhealthy, we'll choose a different bucket (sampled w.r.t. its weight) for responding. Note that if DNSSEC is enabled for this zone, only one of rrdata or health_checked_targets can be set.
                    "internalLoadBalancers": [
                      {
                        "ipAddress": "A String", # The frontend IP address of the
                        "ipProtocol": "A String",
                        "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                        "loadBalancerType": "A String",
                        "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                        "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                        "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                        "region": "A String", # The region for regional ILBs.
                      },
                    ],
                  },
                  "kind": "dns#rRSetRoutingPolicyWrrPolicyWrrPolicyItem",
                  "rrdatas": [
                    "A String",
                  ],
                  "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                    "A String",
                  ],
                  "weight": 3.14, # The weight corresponding to this subset of rrdata. When multiple WeightedRoundRobinPolicyItems are configured, the probability of returning an rrset is proportional to its weight relative to the sum of weights configured for all items. This weight should be non-negative.
                },
              ],
              "kind": "dns#rRSetRoutingPolicyWrrPolicy",
            },
          },
          "rrdatas": [ # As defined in RFC 1035 (section 5) and RFC 1034 (section 3.6.1) -- see examples.
            "A String",
          ],
          "signatureRrdatas": [ # As defined in RFC 4034 (section 3.2).
            "A String",
          ],
          "ttl": 42, # Number of seconds that this ResourceRecordSet can be cached by resolvers.
          "type": "A String", # The identifier of a supported record type. See the list of Supported DNS record types.
        },
      ],
      "deletions": [ # Which ResourceRecordSets to remove? Must match existing data exactly.
        { # A unit of data that is returned by the DNS servers.
          "kind": "dns#resourceRecordSet",
          "name": "A String", # For example, www.example.com.
          "routingPolicy": { # A RRSetRoutingPolicy represents ResourceRecordSet data that is returned dynamically with the response varying based on configured properties such as geolocation or by weighted random selection. # Configures dynamic query responses based on geo location of querying user or a weighted round robin based routing policy. A ResourceRecordSet should only have either rrdata (static) or routing_policy (dynamic). An error is returned otherwise.
            "geo": { # Configures a RRSetRoutingPolicy that routes based on the geo location of the querying user.
              "enableFencing": True or False, # Without fencing, if health check fails for all configured items in the current geo bucket, we'll failover to the next nearest geo bucket. With fencing, if health check is enabled, as long as some targets in the current geo bucket are healthy, we'll return only the healthy targets. However, if they're all unhealthy, we won't failover to the next nearest bucket, we'll simply return all the items in the current bucket even though they're unhealthy.
              "items": [ # The primary geo routing configuration. If there are multiple items with the same location, an error is returned instead.
                { # ResourceRecordSet data for one geo location.
                  "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # For A and AAAA types only. Endpoints to return in the query result only if they are healthy. These can be specified along with rrdata within this item.
                    "internalLoadBalancers": [
                      {
                        "ipAddress": "A String", # The frontend IP address of the
                        "ipProtocol": "A String",
                        "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                        "loadBalancerType": "A String",
                        "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                        "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                        "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                        "region": "A String", # The region for regional ILBs.
                      },
                    ],
                  },
                  "kind": "dns#rRSetRoutingPolicyGeoPolicyGeoPolicyItem",
                  "location": "A String", # The geo-location granularity is a GCP region. This location string should correspond to a GCP region. e.g. "us-east1", "southamerica-east1", "asia-east1", etc.
                  "rrdatas": [
                    "A String",
                  ],
                  "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                    "A String",
                  ],
                },
              ],
              "kind": "dns#rRSetRoutingPolicyGeoPolicy",
            },
            "kind": "dns#rRSetRoutingPolicy",
            "primaryBackup": { # Configures a RRSetRoutingPolicy such that all queries are responded with the primary_targets if they are healthy. And if all of them are unhealthy, then we fallback to a geo localized policy.
              "backupGeoTargets": { # Configures a RRSetRoutingPolicy that routes based on the geo location of the querying user. # Backup targets provide a regional failover policy for the otherwise global primary targets. If serving state is set to BACKUP, this policy essentially becomes a geo routing policy.
                "enableFencing": True or False, # Without fencing, if health check fails for all configured items in the current geo bucket, we'll failover to the next nearest geo bucket. With fencing, if health check is enabled, as long as some targets in the current geo bucket are healthy, we'll return only the healthy targets. However, if they're all unhealthy, we won't failover to the next nearest bucket, we'll simply return all the items in the current bucket even though they're unhealthy.
                "items": [ # The primary geo routing configuration. If there are multiple items with the same location, an error is returned instead.
                  { # ResourceRecordSet data for one geo location.
                    "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # For A and AAAA types only. Endpoints to return in the query result only if they are healthy. These can be specified along with rrdata within this item.
                      "internalLoadBalancers": [
                        {
                          "ipAddress": "A String", # The frontend IP address of the
                          "ipProtocol": "A String",
                          "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                          "loadBalancerType": "A String",
                          "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                          "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                          "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                          "region": "A String", # The region for regional ILBs.
                        },
                      ],
                    },
                    "kind": "dns#rRSetRoutingPolicyGeoPolicyGeoPolicyItem",
                    "location": "A String", # The geo-location granularity is a GCP region. This location string should correspond to a GCP region. e.g. "us-east1", "southamerica-east1", "asia-east1", etc.
                    "rrdatas": [
                      "A String",
                    ],
                    "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                      "A String",
                    ],
                  },
                ],
                "kind": "dns#rRSetRoutingPolicyGeoPolicy",
              },
              "kind": "dns#rRSetRoutingPolicyPrimaryBackupPolicy",
              "primaryTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response.
                "internalLoadBalancers": [
                  {
                    "ipAddress": "A String", # The frontend IP address of the
                    "ipProtocol": "A String",
                    "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                    "loadBalancerType": "A String",
                    "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                    "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                    "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                    "region": "A String", # The region for regional ILBs.
                  },
                ],
              },
              "trickleTraffic": 3.14, # When serving state is PRIMARY, this field provides the option of sending a small percentage of the traffic to the backup targets.
            },
            "wrr": { # Configures a RRSetRoutingPolicy that routes in a weighted round robin fashion.
              "items": [
                { # A routing block which contains the routing information for one WRR item.
                  "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # endpoints that need to be health checked before making the routing decision. The unhealthy endpoints will be omitted from the result. If all endpoints within a buckete are unhealthy, we'll choose a different bucket (sampled w.r.t. its weight) for responding. Note that if DNSSEC is enabled for this zone, only one of rrdata or health_checked_targets can be set.
                    "internalLoadBalancers": [
                      {
                        "ipAddress": "A String", # The frontend IP address of the
                        "ipProtocol": "A String",
                        "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                        "loadBalancerType": "A String",
                        "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                        "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                        "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                        "region": "A String", # The region for regional ILBs.
                      },
                    ],
                  },
                  "kind": "dns#rRSetRoutingPolicyWrrPolicyWrrPolicyItem",
                  "rrdatas": [
                    "A String",
                  ],
                  "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                    "A String",
                  ],
                  "weight": 3.14, # The weight corresponding to this subset of rrdata. When multiple WeightedRoundRobinPolicyItems are configured, the probability of returning an rrset is proportional to its weight relative to the sum of weights configured for all items. This weight should be non-negative.
                },
              ],
              "kind": "dns#rRSetRoutingPolicyWrrPolicy",
            },
          },
          "rrdatas": [ # As defined in RFC 1035 (section 5) and RFC 1034 (section 3.6.1) -- see examples.
            "A String",
          ],
          "signatureRrdatas": [ # As defined in RFC 4034 (section 3.2).
            "A String",
          ],
          "ttl": 42, # Number of seconds that this ResourceRecordSet can be cached by resolvers.
          "type": "A String", # The identifier of a supported record type. See the list of Supported DNS record types.
        },
      ],
      "id": "A String", # Unique identifier for the resource; defined by the server (output only).
      "isServing": True or False, # If the DNS queries for the zone will be served.
      "kind": "dns#change",
      "startTime": "A String", # The time that this operation was started by the server (output only). This is in RFC3339 text format.
      "status": "A String", # Status of the operation (output only). A status of "done" means that the request to update the authoritative servers has been sent, but the servers might not be updated yet.
    }

      clientOperationId: string, For mutating operation requests only. An optional identifier specified by the client. Must be unique for operation resources in the Operations collection.
      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # A Change represents a set of ResourceRecordSet additions and deletions applied atomically to a ManagedZone. ResourceRecordSets within a ManagedZone are modified by creating a new Change element in the Changes collection. In turn the Changes collection also records the past modifications to the ResourceRecordSets in a ManagedZone. The current state of the ManagedZone is the sum effect of applying all Change elements in the Changes collection in sequence.
      "additions": [ # Which ResourceRecordSets to add?
        { # A unit of data that is returned by the DNS servers.
          "kind": "dns#resourceRecordSet",
          "name": "A String", # For example, www.example.com.
          "routingPolicy": { # A RRSetRoutingPolicy represents ResourceRecordSet data that is returned dynamically with the response varying based on configured properties such as geolocation or by weighted random selection. # Configures dynamic query responses based on geo location of querying user or a weighted round robin based routing policy. A ResourceRecordSet should only have either rrdata (static) or routing_policy (dynamic). An error is returned otherwise.
            "geo": { # Configures a RRSetRoutingPolicy that routes based on the geo location of the querying user.
              "enableFencing": True or False, # Without fencing, if health check fails for all configured items in the current geo bucket, we'll failover to the next nearest geo bucket. With fencing, if health check is enabled, as long as some targets in the current geo bucket are healthy, we'll return only the healthy targets. However, if they're all unhealthy, we won't failover to the next nearest bucket, we'll simply return all the items in the current bucket even though they're unhealthy.
              "items": [ # The primary geo routing configuration. If there are multiple items with the same location, an error is returned instead.
                { # ResourceRecordSet data for one geo location.
                  "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # For A and AAAA types only. Endpoints to return in the query result only if they are healthy. These can be specified along with rrdata within this item.
                    "internalLoadBalancers": [
                      {
                        "ipAddress": "A String", # The frontend IP address of the
                        "ipProtocol": "A String",
                        "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                        "loadBalancerType": "A String",
                        "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                        "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                        "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                        "region": "A String", # The region for regional ILBs.
                      },
                    ],
                  },
                  "kind": "dns#rRSetRoutingPolicyGeoPolicyGeoPolicyItem",
                  "location": "A String", # The geo-location granularity is a GCP region. This location string should correspond to a GCP region. e.g. "us-east1", "southamerica-east1", "asia-east1", etc.
                  "rrdatas": [
                    "A String",
                  ],
                  "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                    "A String",
                  ],
                },
              ],
              "kind": "dns#rRSetRoutingPolicyGeoPolicy",
            },
            "kind": "dns#rRSetRoutingPolicy",
            "primaryBackup": { # Configures a RRSetRoutingPolicy such that all queries are responded with the primary_targets if they are healthy. And if all of them are unhealthy, then we fallback to a geo localized policy.
              "backupGeoTargets": { # Configures a RRSetRoutingPolicy that routes based on the geo location of the querying user. # Backup targets provide a regional failover policy for the otherwise global primary targets. If serving state is set to BACKUP, this policy essentially becomes a geo routing policy.
                "enableFencing": True or False, # Without fencing, if health check fails for all configured items in the current geo bucket, we'll failover to the next nearest geo bucket. With fencing, if health check is enabled, as long as some targets in the current geo bucket are healthy, we'll return only the healthy targets. However, if they're all unhealthy, we won't failover to the next nearest bucket, we'll simply return all the items in the current bucket even though they're unhealthy.
                "items": [ # The primary geo routing configuration. If there are multiple items with the same location, an error is returned instead.
                  { # ResourceRecordSet data for one geo location.
                    "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # For A and AAAA types only. Endpoints to return in the query result only if they are healthy. These can be specified along with rrdata within this item.
                      "internalLoadBalancers": [
                        {
                          "ipAddress": "A String", # The frontend IP address of the
                          "ipProtocol": "A String",
                          "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                          "loadBalancerType": "A String",
                          "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                          "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                          "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                          "region": "A String", # The region for regional ILBs.
                        },
                      ],
                    },
                    "kind": "dns#rRSetRoutingPolicyGeoPolicyGeoPolicyItem",
                    "location": "A String", # The geo-location granularity is a GCP region. This location string should correspond to a GCP region. e.g. "us-east1", "southamerica-east1", "asia-east1", etc.
                    "rrdatas": [
                      "A String",
                    ],
                    "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                      "A String",
                    ],
                  },
                ],
                "kind": "dns#rRSetRoutingPolicyGeoPolicy",
              },
              "kind": "dns#rRSetRoutingPolicyPrimaryBackupPolicy",
              "primaryTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response.
                "internalLoadBalancers": [
                  {
                    "ipAddress": "A String", # The frontend IP address of the
                    "ipProtocol": "A String",
                    "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                    "loadBalancerType": "A String",
                    "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                    "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                    "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                    "region": "A String", # The region for regional ILBs.
                  },
                ],
              },
              "trickleTraffic": 3.14, # When serving state is PRIMARY, this field provides the option of sending a small percentage of the traffic to the backup targets.
            },
            "wrr": { # Configures a RRSetRoutingPolicy that routes in a weighted round robin fashion.
              "items": [
                { # A routing block which contains the routing information for one WRR item.
                  "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # endpoints that need to be health checked before making the routing decision. The unhealthy endpoints will be omitted from the result. If all endpoints within a buckete are unhealthy, we'll choose a different bucket (sampled w.r.t. its weight) for responding. Note that if DNSSEC is enabled for this zone, only one of rrdata or health_checked_targets can be set.
                    "internalLoadBalancers": [
                      {
                        "ipAddress": "A String", # The frontend IP address of the
                        "ipProtocol": "A String",
                        "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                        "loadBalancerType": "A String",
                        "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                        "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                        "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                        "region": "A String", # The region for regional ILBs.
                      },
                    ],
                  },
                  "kind": "dns#rRSetRoutingPolicyWrrPolicyWrrPolicyItem",
                  "rrdatas": [
                    "A String",
                  ],
                  "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                    "A String",
                  ],
                  "weight": 3.14, # The weight corresponding to this subset of rrdata. When multiple WeightedRoundRobinPolicyItems are configured, the probability of returning an rrset is proportional to its weight relative to the sum of weights configured for all items. This weight should be non-negative.
                },
              ],
              "kind": "dns#rRSetRoutingPolicyWrrPolicy",
            },
          },
          "rrdatas": [ # As defined in RFC 1035 (section 5) and RFC 1034 (section 3.6.1) -- see examples.
            "A String",
          ],
          "signatureRrdatas": [ # As defined in RFC 4034 (section 3.2).
            "A String",
          ],
          "ttl": 42, # Number of seconds that this ResourceRecordSet can be cached by resolvers.
          "type": "A String", # The identifier of a supported record type. See the list of Supported DNS record types.
        },
      ],
      "deletions": [ # Which ResourceRecordSets to remove? Must match existing data exactly.
        { # A unit of data that is returned by the DNS servers.
          "kind": "dns#resourceRecordSet",
          "name": "A String", # For example, www.example.com.
          "routingPolicy": { # A RRSetRoutingPolicy represents ResourceRecordSet data that is returned dynamically with the response varying based on configured properties such as geolocation or by weighted random selection. # Configures dynamic query responses based on geo location of querying user or a weighted round robin based routing policy. A ResourceRecordSet should only have either rrdata (static) or routing_policy (dynamic). An error is returned otherwise.
            "geo": { # Configures a RRSetRoutingPolicy that routes based on the geo location of the querying user.
              "enableFencing": True or False, # Without fencing, if health check fails for all configured items in the current geo bucket, we'll failover to the next nearest geo bucket. With fencing, if health check is enabled, as long as some targets in the current geo bucket are healthy, we'll return only the healthy targets. However, if they're all unhealthy, we won't failover to the next nearest bucket, we'll simply return all the items in the current bucket even though they're unhealthy.
              "items": [ # The primary geo routing configuration. If there are multiple items with the same location, an error is returned instead.
                { # ResourceRecordSet data for one geo location.
                  "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # For A and AAAA types only. Endpoints to return in the query result only if they are healthy. These can be specified along with rrdata within this item.
                    "internalLoadBalancers": [
                      {
                        "ipAddress": "A String", # The frontend IP address of the
                        "ipProtocol": "A String",
                        "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                        "loadBalancerType": "A String",
                        "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                        "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                        "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                        "region": "A String", # The region for regional ILBs.
                      },
                    ],
                  },
                  "kind": "dns#rRSetRoutingPolicyGeoPolicyGeoPolicyItem",
                  "location": "A String", # The geo-location granularity is a GCP region. This location string should correspond to a GCP region. e.g. "us-east1", "southamerica-east1", "asia-east1", etc.
                  "rrdatas": [
                    "A String",
                  ],
                  "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                    "A String",
                  ],
                },
              ],
              "kind": "dns#rRSetRoutingPolicyGeoPolicy",
            },
            "kind": "dns#rRSetRoutingPolicy",
            "primaryBackup": { # Configures a RRSetRoutingPolicy such that all queries are responded with the primary_targets if they are healthy. And if all of them are unhealthy, then we fallback to a geo localized policy.
              "backupGeoTargets": { # Configures a RRSetRoutingPolicy that routes based on the geo location of the querying user. # Backup targets provide a regional failover policy for the otherwise global primary targets. If serving state is set to BACKUP, this policy essentially becomes a geo routing policy.
                "enableFencing": True or False, # Without fencing, if health check fails for all configured items in the current geo bucket, we'll failover to the next nearest geo bucket. With fencing, if health check is enabled, as long as some targets in the current geo bucket are healthy, we'll return only the healthy targets. However, if they're all unhealthy, we won't failover to the next nearest bucket, we'll simply return all the items in the current bucket even though they're unhealthy.
                "items": [ # The primary geo routing configuration. If there are multiple items with the same location, an error is returned instead.
                  { # ResourceRecordSet data for one geo location.
                    "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # For A and AAAA types only. Endpoints to return in the query result only if they are healthy. These can be specified along with rrdata within this item.
                      "internalLoadBalancers": [
                        {
                          "ipAddress": "A String", # The frontend IP address of the
                          "ipProtocol": "A String",
                          "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                          "loadBalancerType": "A String",
                          "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                          "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                          "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                          "region": "A String", # The region for regional ILBs.
                        },
                      ],
                    },
                    "kind": "dns#rRSetRoutingPolicyGeoPolicyGeoPolicyItem",
                    "location": "A String", # The geo-location granularity is a GCP region. This location string should correspond to a GCP region. e.g. "us-east1", "southamerica-east1", "asia-east1", etc.
                    "rrdatas": [
                      "A String",
                    ],
                    "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                      "A String",
                    ],
                  },
                ],
                "kind": "dns#rRSetRoutingPolicyGeoPolicy",
              },
              "kind": "dns#rRSetRoutingPolicyPrimaryBackupPolicy",
              "primaryTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response.
                "internalLoadBalancers": [
                  {
                    "ipAddress": "A String", # The frontend IP address of the
                    "ipProtocol": "A String",
                    "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                    "loadBalancerType": "A String",
                    "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                    "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                    "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                    "region": "A String", # The region for regional ILBs.
                  },
                ],
              },
              "trickleTraffic": 3.14, # When serving state is PRIMARY, this field provides the option of sending a small percentage of the traffic to the backup targets.
            },
            "wrr": { # Configures a RRSetRoutingPolicy that routes in a weighted round robin fashion.
              "items": [
                { # A routing block which contains the routing information for one WRR item.
                  "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # endpoints that need to be health checked before making the routing decision. The unhealthy endpoints will be omitted from the result. If all endpoints within a buckete are unhealthy, we'll choose a different bucket (sampled w.r.t. its weight) for responding. Note that if DNSSEC is enabled for this zone, only one of rrdata or health_checked_targets can be set.
                    "internalLoadBalancers": [
                      {
                        "ipAddress": "A String", # The frontend IP address of the
                        "ipProtocol": "A String",
                        "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                        "loadBalancerType": "A String",
                        "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                        "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                        "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                        "region": "A String", # The region for regional ILBs.
                      },
                    ],
                  },
                  "kind": "dns#rRSetRoutingPolicyWrrPolicyWrrPolicyItem",
                  "rrdatas": [
                    "A String",
                  ],
                  "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                    "A String",
                  ],
                  "weight": 3.14, # The weight corresponding to this subset of rrdata. When multiple WeightedRoundRobinPolicyItems are configured, the probability of returning an rrset is proportional to its weight relative to the sum of weights configured for all items. This weight should be non-negative.
                },
              ],
              "kind": "dns#rRSetRoutingPolicyWrrPolicy",
            },
          },
          "rrdatas": [ # As defined in RFC 1035 (section 5) and RFC 1034 (section 3.6.1) -- see examples.
            "A String",
          ],
          "signatureRrdatas": [ # As defined in RFC 4034 (section 3.2).
            "A String",
          ],
          "ttl": 42, # Number of seconds that this ResourceRecordSet can be cached by resolvers.
          "type": "A String", # The identifier of a supported record type. See the list of Supported DNS record types.
        },
      ],
      "id": "A String", # Unique identifier for the resource; defined by the server (output only).
      "isServing": True or False, # If the DNS queries for the zone will be served.
      "kind": "dns#change",
      "startTime": "A String", # The time that this operation was started by the server (output only). This is in RFC3339 text format.
      "status": "A String", # Status of the operation (output only). A status of "done" means that the request to update the authoritative servers has been sent, but the servers might not be updated yet.
    }

`get(project, managedZone, changeId, clientOperationId=None, x__xgafv=None)`

    Fetches the representation of an existing Change.

    Args:
      project: string, Identifies the project addressed by this request. (required)
      managedZone: string, Identifies the managed zone addressed by this request. Can be the managed zone name or ID. (required)
      changeId: string, The identifier of the requested change, from a previous ResourceRecordSetsChangeResponse. (required)
      clientOperationId: string, For mutating operation requests only. An optional identifier specified by the client. Must be unique for operation resources in the Operations collection.
      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # A Change represents a set of ResourceRecordSet additions and deletions applied atomically to a ManagedZone. ResourceRecordSets within a ManagedZone are modified by creating a new Change element in the Changes collection. In turn the Changes collection also records the past modifications to the ResourceRecordSets in a ManagedZone. The current state of the ManagedZone is the sum effect of applying all Change elements in the Changes collection in sequence.
      "additions": [ # Which ResourceRecordSets to add?
        { # A unit of data that is returned by the DNS servers.
          "kind": "dns#resourceRecordSet",
          "name": "A String", # For example, www.example.com.
          "routingPolicy": { # A RRSetRoutingPolicy represents ResourceRecordSet data that is returned dynamically with the response varying based on configured properties such as geolocation or by weighted random selection. # Configures dynamic query responses based on geo location of querying user or a weighted round robin based routing policy. A ResourceRecordSet should only have either rrdata (static) or routing_policy (dynamic). An error is returned otherwise.
            "geo": { # Configures a RRSetRoutingPolicy that routes based on the geo location of the querying user.
              "enableFencing": True or False, # Without fencing, if health check fails for all configured items in the current geo bucket, we'll failover to the next nearest geo bucket. With fencing, if health check is enabled, as long as some targets in the current geo bucket are healthy, we'll return only the healthy targets. However, if they're all unhealthy, we won't failover to the next nearest bucket, we'll simply return all the items in the current bucket even though they're unhealthy.
              "items": [ # The primary geo routing configuration. If there are multiple items with the same location, an error is returned instead.
                { # ResourceRecordSet data for one geo location.
                  "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # For A and AAAA types only. Endpoints to return in the query result only if they are healthy. These can be specified along with rrdata within this item.
                    "internalLoadBalancers": [
                      {
                        "ipAddress": "A String", # The frontend IP address of the
                        "ipProtocol": "A String",
                        "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                        "loadBalancerType": "A String",
                        "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                        "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                        "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                        "region": "A String", # The region for regional ILBs.
                      },
                    ],
                  },
                  "kind": "dns#rRSetRoutingPolicyGeoPolicyGeoPolicyItem",
                  "location": "A String", # The geo-location granularity is a GCP region. This location string should correspond to a GCP region. e.g. "us-east1", "southamerica-east1", "asia-east1", etc.
                  "rrdatas": [
                    "A String",
                  ],
                  "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                    "A String",
                  ],
                },
              ],
              "kind": "dns#rRSetRoutingPolicyGeoPolicy",
            },
            "kind": "dns#rRSetRoutingPolicy",
            "primaryBackup": { # Configures a RRSetRoutingPolicy such that all queries are responded with the primary_targets if they are healthy. And if all of them are unhealthy, then we fallback to a geo localized policy.
              "backupGeoTargets": { # Configures a RRSetRoutingPolicy that routes based on the geo location of the querying user. # Backup targets provide a regional failover policy for the otherwise global primary targets. If serving state is set to BACKUP, this policy essentially becomes a geo routing policy.
                "enableFencing": True or False, # Without fencing, if health check fails for all configured items in the current geo bucket, we'll failover to the next nearest geo bucket. With fencing, if health check is enabled, as long as some targets in the current geo bucket are healthy, we'll return only the healthy targets. However, if they're all unhealthy, we won't failover to the next nearest bucket, we'll simply return all the items in the current bucket even though they're unhealthy.
                "items": [ # The primary geo routing configuration. If there are multiple items with the same location, an error is returned instead.
                  { # ResourceRecordSet data for one geo location.
                    "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # For A and AAAA types only. Endpoints to return in the query result only if they are healthy. These can be specified along with rrdata within this item.
                      "internalLoadBalancers": [
                        {
                          "ipAddress": "A String", # The frontend IP address of the
                          "ipProtocol": "A String",
                          "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                          "loadBalancerType": "A String",
                          "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                          "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                          "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                          "region": "A String", # The region for regional ILBs.
                        },
                      ],
                    },
                    "kind": "dns#rRSetRoutingPolicyGeoPolicyGeoPolicyItem",
                    "location": "A String", # The geo-location granularity is a GCP region. This location string should correspond to a GCP region. e.g. "us-east1", "southamerica-east1", "asia-east1", etc.
                    "rrdatas": [
                      "A String",
                    ],
                    "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                      "A String",
                    ],
                  },
                ],
                "kind": "dns#rRSetRoutingPolicyGeoPolicy",
              },
              "kind": "dns#rRSetRoutingPolicyPrimaryBackupPolicy",
              "primaryTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response.
                "internalLoadBalancers": [
                  {
                    "ipAddress": "A String", # The frontend IP address of the
                    "ipProtocol": "A String",
                    "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                    "loadBalancerType": "A String",
                    "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                    "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                    "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                    "region": "A String", # The region for regional ILBs.
                  },
                ],
              },
              "trickleTraffic": 3.14, # When serving state is PRIMARY, this field provides the option of sending a small percentage of the traffic to the backup targets.
            },
            "wrr": { # Configures a RRSetRoutingPolicy that routes in a weighted round robin fashion.
              "items": [
                { # A routing block which contains the routing information for one WRR item.
                  "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # endpoints that need to be health checked before making the routing decision. The unhealthy endpoints will be omitted from the result. If all endpoints within a buckete are unhealthy, we'll choose a different bucket (sampled w.r.t. its weight) for responding. Note that if DNSSEC is enabled for this zone, only one of rrdata or health_checked_targets can be set.
                    "internalLoadBalancers": [
                      {
                        "ipAddress": "A String", # The frontend IP address of the
                        "ipProtocol": "A String",
                        "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                        "loadBalancerType": "A String",
                        "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                        "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                        "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                        "region": "A String", # The region for regional ILBs.
                      },
                    ],
                  },
                  "kind": "dns#rRSetRoutingPolicyWrrPolicyWrrPolicyItem",
                  "rrdatas": [
                    "A String",
                  ],
                  "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                    "A String",
                  ],
                  "weight": 3.14, # The weight corresponding to this subset of rrdata. When multiple WeightedRoundRobinPolicyItems are configured, the probability of returning an rrset is proportional to its weight relative to the sum of weights configured for all items. This weight should be non-negative.
                },
              ],
              "kind": "dns#rRSetRoutingPolicyWrrPolicy",
            },
          },
          "rrdatas": [ # As defined in RFC 1035 (section 5) and RFC 1034 (section 3.6.1) -- see examples.
            "A String",
          ],
          "signatureRrdatas": [ # As defined in RFC 4034 (section 3.2).
            "A String",
          ],
          "ttl": 42, # Number of seconds that this ResourceRecordSet can be cached by resolvers.
          "type": "A String", # The identifier of a supported record type. See the list of Supported DNS record types.
        },
      ],
      "deletions": [ # Which ResourceRecordSets to remove? Must match existing data exactly.
        { # A unit of data that is returned by the DNS servers.
          "kind": "dns#resourceRecordSet",
          "name": "A String", # For example, www.example.com.
          "routingPolicy": { # A RRSetRoutingPolicy represents ResourceRecordSet data that is returned dynamically with the response varying based on configured properties such as geolocation or by weighted random selection. # Configures dynamic query responses based on geo location of querying user or a weighted round robin based routing policy. A ResourceRecordSet should only have either rrdata (static) or routing_policy (dynamic). An error is returned otherwise.
            "geo": { # Configures a RRSetRoutingPolicy that routes based on the geo location of the querying user.
              "enableFencing": True or False, # Without fencing, if health check fails for all configured items in the current geo bucket, we'll failover to the next nearest geo bucket. With fencing, if health check is enabled, as long as some targets in the current geo bucket are healthy, we'll return only the healthy targets. However, if they're all unhealthy, we won't failover to the next nearest bucket, we'll simply return all the items in the current bucket even though they're unhealthy.
              "items": [ # The primary geo routing configuration. If there are multiple items with the same location, an error is returned instead.
                { # ResourceRecordSet data for one geo location.
                  "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # For A and AAAA types only. Endpoints to return in the query result only if they are healthy. These can be specified along with rrdata within this item.
                    "internalLoadBalancers": [
                      {
                        "ipAddress": "A String", # The frontend IP address of the
                        "ipProtocol": "A String",
                        "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                        "loadBalancerType": "A String",
                        "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                        "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                        "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                        "region": "A String", # The region for regional ILBs.
                      },
                    ],
                  },
                  "kind": "dns#rRSetRoutingPolicyGeoPolicyGeoPolicyItem",
                  "location": "A String", # The geo-location granularity is a GCP region. This location string should correspond to a GCP region. e.g. "us-east1", "southamerica-east1", "asia-east1", etc.
                  "rrdatas": [
                    "A String",
                  ],
                  "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                    "A String",
                  ],
                },
              ],
              "kind": "dns#rRSetRoutingPolicyGeoPolicy",
            },
            "kind": "dns#rRSetRoutingPolicy",
            "primaryBackup": { # Configures a RRSetRoutingPolicy such that all queries are responded with the primary_targets if they are healthy. And if all of them are unhealthy, then we fallback to a geo localized policy.
              "backupGeoTargets": { # Configures a RRSetRoutingPolicy that routes based on the geo location of the querying user. # Backup targets provide a regional failover policy for the otherwise global primary targets. If serving state is set to BACKUP, this policy essentially becomes a geo routing policy.
                "enableFencing": True or False, # Without fencing, if health check fails for all configured items in the current geo bucket, we'll failover to the next nearest geo bucket. With fencing, if health check is enabled, as long as some targets in the current geo bucket are healthy, we'll return only the healthy targets. However, if they're all unhealthy, we won't failover to the next nearest bucket, we'll simply return all the items in the current bucket even though they're unhealthy.
                "items": [ # The primary geo routing configuration. If there are multiple items with the same location, an error is returned instead.
                  { # ResourceRecordSet data for one geo location.
                    "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # For A and AAAA types only. Endpoints to return in the query result only if they are healthy. These can be specified along with rrdata within this item.
                      "internalLoadBalancers": [
                        {
                          "ipAddress": "A String", # The frontend IP address of the
                          "ipProtocol": "A String",
                          "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                          "loadBalancerType": "A String",
                          "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                          "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                          "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                          "region": "A String", # The region for regional ILBs.
                        },
                      ],
                    },
                    "kind": "dns#rRSetRoutingPolicyGeoPolicyGeoPolicyItem",
                    "location": "A String", # The geo-location granularity is a GCP region. This location string should correspond to a GCP region. e.g. "us-east1", "southamerica-east1", "asia-east1", etc.
                    "rrdatas": [
                      "A String",
                    ],
                    "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                      "A String",
                    ],
                  },
                ],
                "kind": "dns#rRSetRoutingPolicyGeoPolicy",
              },
              "kind": "dns#rRSetRoutingPolicyPrimaryBackupPolicy",
              "primaryTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response.
                "internalLoadBalancers": [
                  {
                    "ipAddress": "A String", # The frontend IP address of the
                    "ipProtocol": "A String",
                    "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                    "loadBalancerType": "A String",
                    "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                    "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                    "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                    "region": "A String", # The region for regional ILBs.
                  },
                ],
              },
              "trickleTraffic": 3.14, # When serving state is PRIMARY, this field provides the option of sending a small percentage of the traffic to the backup targets.
            },
            "wrr": { # Configures a RRSetRoutingPolicy that routes in a weighted round robin fashion.
              "items": [
                { # A routing block which contains the routing information for one WRR item.
                  "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # endpoints that need to be health checked before making the routing decision. The unhealthy endpoints will be omitted from the result. If all endpoints within a buckete are unhealthy, we'll choose a different bucket (sampled w.r.t. its weight) for responding. Note that if DNSSEC is enabled for this zone, only one of rrdata or health_checked_targets can be set.
                    "internalLoadBalancers": [
                      {
                        "ipAddress": "A String", # The frontend IP address of the
                        "ipProtocol": "A String",
                        "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                        "loadBalancerType": "A String",
                        "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                        "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                        "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                        "region": "A String", # The region for regional ILBs.
                      },
                    ],
                  },
                  "kind": "dns#rRSetRoutingPolicyWrrPolicyWrrPolicyItem",
                  "rrdatas": [
                    "A String",
                  ],
                  "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                    "A String",
                  ],
                  "weight": 3.14, # The weight corresponding to this subset of rrdata. When multiple WeightedRoundRobinPolicyItems are configured, the probability of returning an rrset is proportional to its weight relative to the sum of weights configured for all items. This weight should be non-negative.
                },
              ],
              "kind": "dns#rRSetRoutingPolicyWrrPolicy",
            },
          },
          "rrdatas": [ # As defined in RFC 1035 (section 5) and RFC 1034 (section 3.6.1) -- see examples.
            "A String",
          ],
          "signatureRrdatas": [ # As defined in RFC 4034 (section 3.2).
            "A String",
          ],
          "ttl": 42, # Number of seconds that this ResourceRecordSet can be cached by resolvers.
          "type": "A String", # The identifier of a supported record type. See the list of Supported DNS record types.
        },
      ],
      "id": "A String", # Unique identifier for the resource; defined by the server (output only).
      "isServing": True or False, # If the DNS queries for the zone will be served.
      "kind": "dns#change",
      "startTime": "A String", # The time that this operation was started by the server (output only). This is in RFC3339 text format.
      "status": "A String", # Status of the operation (output only). A status of "done" means that the request to update the authoritative servers has been sent, but the servers might not be updated yet.
    }

`list(project, managedZone, maxResults=None, pageToken=None, sortBy=None, sortOrder=None, x__xgafv=None)`

    Enumerates Changes to a ResourceRecordSet collection.

    Args:
      project: string, Identifies the project addressed by this request. (required)
      managedZone: string, Identifies the managed zone addressed by this request. Can be the managed zone name or ID. (required)
      maxResults: integer, Optional. Maximum number of results to be returned. If unspecified, the server decides how many results to return.
      pageToken: string, Optional. A tag returned by a previous list request that was truncated. Use this parameter to continue a previous list request.
      sortBy: string, Sorting criterion. The only supported value is change sequence.
        Allowed values
          changeSequence -
      sortOrder: string, Sorting order direction: 'ascending' or 'descending'.
      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # The response to a request to enumerate Changes to a ResourceRecordSets collection.
      "changes": [ # The requested changes.
        { # A Change represents a set of ResourceRecordSet additions and deletions applied atomically to a ManagedZone. ResourceRecordSets within a ManagedZone are modified by creating a new Change element in the Changes collection. In turn the Changes collection also records the past modifications to the ResourceRecordSets in a ManagedZone. The current state of the ManagedZone is the sum effect of applying all Change elements in the Changes collection in sequence.
          "additions": [ # Which ResourceRecordSets to add?
            { # A unit of data that is returned by the DNS servers.
              "kind": "dns#resourceRecordSet",
              "name": "A String", # For example, www.example.com.
              "routingPolicy": { # A RRSetRoutingPolicy represents ResourceRecordSet data that is returned dynamically with the response varying based on configured properties such as geolocation or by weighted random selection. # Configures dynamic query responses based on geo location of querying user or a weighted round robin based routing policy. A ResourceRecordSet should only have either rrdata (static) or routing_policy (dynamic). An error is returned otherwise.
                "geo": { # Configures a RRSetRoutingPolicy that routes based on the geo location of the querying user.
                  "enableFencing": True or False, # Without fencing, if health check fails for all configured items in the current geo bucket, we'll failover to the next nearest geo bucket. With fencing, if health check is enabled, as long as some targets in the current geo bucket are healthy, we'll return only the healthy targets. However, if they're all unhealthy, we won't failover to the next nearest bucket, we'll simply return all the items in the current bucket even though they're unhealthy.
                  "items": [ # The primary geo routing configuration. If there are multiple items with the same location, an error is returned instead.
                    { # ResourceRecordSet data for one geo location.
                      "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # For A and AAAA types only. Endpoints to return in the query result only if they are healthy. These can be specified along with rrdata within this item.
                        "internalLoadBalancers": [
                          {
                            "ipAddress": "A String", # The frontend IP address of the
                            "ipProtocol": "A String",
                            "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                            "loadBalancerType": "A String",
                            "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                            "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                            "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                            "region": "A String", # The region for regional ILBs.
                          },
                        ],
                      },
                      "kind": "dns#rRSetRoutingPolicyGeoPolicyGeoPolicyItem",
                      "location": "A String", # The geo-location granularity is a GCP region. This location string should correspond to a GCP region. e.g. "us-east1", "southamerica-east1", "asia-east1", etc.
                      "rrdatas": [
                        "A String",
                      ],
                      "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                        "A String",
                      ],
                    },
                  ],
                  "kind": "dns#rRSetRoutingPolicyGeoPolicy",
                },
                "kind": "dns#rRSetRoutingPolicy",
                "primaryBackup": { # Configures a RRSetRoutingPolicy such that all queries are responded with the primary_targets if they are healthy. And if all of them are unhealthy, then we fallback to a geo localized policy.
                  "backupGeoTargets": { # Configures a RRSetRoutingPolicy that routes based on the geo location of the querying user. # Backup targets provide a regional failover policy for the otherwise global primary targets. If serving state is set to BACKUP, this policy essentially becomes a geo routing policy.
                    "enableFencing": True or False, # Without fencing, if health check fails for all configured items in the current geo bucket, we'll failover to the next nearest geo bucket. With fencing, if health check is enabled, as long as some targets in the current geo bucket are healthy, we'll return only the healthy targets. However, if they're all unhealthy, we won't failover to the next nearest bucket, we'll simply return all the items in the current bucket even though they're unhealthy.
                    "items": [ # The primary geo routing configuration. If there are multiple items with the same location, an error is returned instead.
                      { # ResourceRecordSet data for one geo location.
                        "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # For A and AAAA types only. Endpoints to return in the query result only if they are healthy. These can be specified along with rrdata within this item.
                          "internalLoadBalancers": [
                            {
                              "ipAddress": "A String", # The frontend IP address of the
                              "ipProtocol": "A String",
                              "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                              "loadBalancerType": "A String",
                              "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                              "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                              "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                              "region": "A String", # The region for regional ILBs.
                            },
                          ],
                        },
                        "kind": "dns#rRSetRoutingPolicyGeoPolicyGeoPolicyItem",
                        "location": "A String", # The geo-location granularity is a GCP region. This location string should correspond to a GCP region. e.g. "us-east1", "southamerica-east1", "asia-east1", etc.
                        "rrdatas": [
                          "A String",
                        ],
                        "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                          "A String",
                        ],
                      },
                    ],
                    "kind": "dns#rRSetRoutingPolicyGeoPolicy",
                  },
                  "kind": "dns#rRSetRoutingPolicyPrimaryBackupPolicy",
                  "primaryTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response.
                    "internalLoadBalancers": [
                      {
                        "ipAddress": "A String", # The frontend IP address of the
                        "ipProtocol": "A String",
                        "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                        "loadBalancerType": "A String",
                        "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                        "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                        "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                        "region": "A String", # The region for regional ILBs.
                      },
                    ],
                  },
                  "trickleTraffic": 3.14, # When serving state is PRIMARY, this field provides the option of sending a small percentage of the traffic to the backup targets.
                },
                "wrr": { # Configures a RRSetRoutingPolicy that routes in a weighted round robin fashion.
                  "items": [
                    { # A routing block which contains the routing information for one WRR item.
                      "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # endpoints that need to be health checked before making the routing decision. The unhealthy endpoints will be omitted from the result. If all endpoints within a buckete are unhealthy, we'll choose a different bucket (sampled w.r.t. its weight) for responding. Note that if DNSSEC is enabled for this zone, only one of rrdata or health_checked_targets can be set.
                        "internalLoadBalancers": [
                          {
                            "ipAddress": "A String", # The frontend IP address of the
                            "ipProtocol": "A String",
                            "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                            "loadBalancerType": "A String",
                            "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                            "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                            "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                            "region": "A String", # The region for regional ILBs.
                          },
                        ],
                      },
                      "kind": "dns#rRSetRoutingPolicyWrrPolicyWrrPolicyItem",
                      "rrdatas": [
                        "A String",
                      ],
                      "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                        "A String",
                      ],
                      "weight": 3.14, # The weight corresponding to this subset of rrdata. When multiple WeightedRoundRobinPolicyItems are configured, the probability of returning an rrset is proportional to its weight relative to the sum of weights configured for all items. This weight should be non-negative.
                    },
                  ],
                  "kind": "dns#rRSetRoutingPolicyWrrPolicy",
                },
              },
              "rrdatas": [ # As defined in RFC 1035 (section 5) and RFC 1034 (section 3.6.1) -- see examples.
                "A String",
              ],
              "signatureRrdatas": [ # As defined in RFC 4034 (section 3.2).
                "A String",
              ],
              "ttl": 42, # Number of seconds that this ResourceRecordSet can be cached by resolvers.
              "type": "A String", # The identifier of a supported record type. See the list of Supported DNS record types.
            },
          ],
          "deletions": [ # Which ResourceRecordSets to remove? Must match existing data exactly.
            { # A unit of data that is returned by the DNS servers.
              "kind": "dns#resourceRecordSet",
              "name": "A String", # For example, www.example.com.
              "routingPolicy": { # A RRSetRoutingPolicy represents ResourceRecordSet data that is returned dynamically with the response varying based on configured properties such as geolocation or by weighted random selection. # Configures dynamic query responses based on geo location of querying user or a weighted round robin based routing policy. A ResourceRecordSet should only have either rrdata (static) or routing_policy (dynamic). An error is returned otherwise.
                "geo": { # Configures a RRSetRoutingPolicy that routes based on the geo location of the querying user.
                  "enableFencing": True or False, # Without fencing, if health check fails for all configured items in the current geo bucket, we'll failover to the next nearest geo bucket. With fencing, if health check is enabled, as long as some targets in the current geo bucket are healthy, we'll return only the healthy targets. However, if they're all unhealthy, we won't failover to the next nearest bucket, we'll simply return all the items in the current bucket even though they're unhealthy.
                  "items": [ # The primary geo routing configuration. If there are multiple items with the same location, an error is returned instead.
                    { # ResourceRecordSet data for one geo location.
                      "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # For A and AAAA types only. Endpoints to return in the query result only if they are healthy. These can be specified along with rrdata within this item.
                        "internalLoadBalancers": [
                          {
                            "ipAddress": "A String", # The frontend IP address of the
                            "ipProtocol": "A String",
                            "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                            "loadBalancerType": "A String",
                            "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                            "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                            "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                            "region": "A String", # The region for regional ILBs.
                          },
                        ],
                      },
                      "kind": "dns#rRSetRoutingPolicyGeoPolicyGeoPolicyItem",
                      "location": "A String", # The geo-location granularity is a GCP region. This location string should correspond to a GCP region. e.g. "us-east1", "southamerica-east1", "asia-east1", etc.
                      "rrdatas": [
                        "A String",
                      ],
                      "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                        "A String",
                      ],
                    },
                  ],
                  "kind": "dns#rRSetRoutingPolicyGeoPolicy",
                },
                "kind": "dns#rRSetRoutingPolicy",
                "primaryBackup": { # Configures a RRSetRoutingPolicy such that all queries are responded with the primary_targets if they are healthy. And if all of them are unhealthy, then we fallback to a geo localized policy.
                  "backupGeoTargets": { # Configures a RRSetRoutingPolicy that routes based on the geo location of the querying user. # Backup targets provide a regional failover policy for the otherwise global primary targets. If serving state is set to BACKUP, this policy essentially becomes a geo routing policy.
                    "enableFencing": True or False, # Without fencing, if health check fails for all configured items in the current geo bucket, we'll failover to the next nearest geo bucket. With fencing, if health check is enabled, as long as some targets in the current geo bucket are healthy, we'll return only the healthy targets. However, if they're all unhealthy, we won't failover to the next nearest bucket, we'll simply return all the items in the current bucket even though they're unhealthy.
                    "items": [ # The primary geo routing configuration. If there are multiple items with the same location, an error is returned instead.
                      { # ResourceRecordSet data for one geo location.
                        "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # For A and AAAA types only. Endpoints to return in the query result only if they are healthy. These can be specified along with rrdata within this item.
                          "internalLoadBalancers": [
                            {
                              "ipAddress": "A String", # The frontend IP address of the
                              "ipProtocol": "A String",
                              "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                              "loadBalancerType": "A String",
                              "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                              "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                              "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                              "region": "A String", # The region for regional ILBs.
                            },
                          ],
                        },
                        "kind": "dns#rRSetRoutingPolicyGeoPolicyGeoPolicyItem",
                        "location": "A String", # The geo-location granularity is a GCP region. This location string should correspond to a GCP region. e.g. "us-east1", "southamerica-east1", "asia-east1", etc.
                        "rrdatas": [
                          "A String",
                        ],
                        "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                          "A String",
                        ],
                      },
                    ],
                    "kind": "dns#rRSetRoutingPolicyGeoPolicy",
                  },
                  "kind": "dns#rRSetRoutingPolicyPrimaryBackupPolicy",
                  "primaryTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response.
                    "internalLoadBalancers": [
                      {
                        "ipAddress": "A String", # The frontend IP address of the
                        "ipProtocol": "A String",
                        "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                        "loadBalancerType": "A String",
                        "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                        "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                        "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                        "region": "A String", # The region for regional ILBs.
                      },
                    ],
                  },
                  "trickleTraffic": 3.14, # When serving state is PRIMARY, this field provides the option of sending a small percentage of the traffic to the backup targets.
                },
                "wrr": { # Configures a RRSetRoutingPolicy that routes in a weighted round robin fashion.
                  "items": [
                    { # A routing block which contains the routing information for one WRR item.
                      "healthCheckedTargets": { # HealthCheckTargets describes endpoints to health-check when responding to Routing Policy queries. Only the healthy endpoints will be included in the response. # endpoints that need to be health checked before making the routing decision. The unhealthy endpoints will be omitted from the result. If all endpoints within a buckete are unhealthy, we'll choose a different bucket (sampled w.r.t. its weight) for responding. Note that if DNSSEC is enabled for this zone, only one of rrdata or health_checked_targets can be set.
                        "internalLoadBalancers": [
                          {
                            "ipAddress": "A String", # The frontend IP address of the
                            "ipProtocol": "A String",
                            "kind": "dns#rRSetRoutingPolicyLoadBalancerTarget",
                            "loadBalancerType": "A String",
                            "networkUrl": "A String", # The fully qualified url of the network on which the ILB is
                            "port": "A String", # Load Balancer to health check. The configured port of the Load Balancer.
                            "project": "A String", # present. This should be formatted like https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network} The project ID in which the ILB exists.
                            "region": "A String", # The region for regional ILBs.
                          },
                        ],
                      },
                      "kind": "dns#rRSetRoutingPolicyWrrPolicyWrrPolicyItem",
                      "rrdatas": [
                        "A String",
                      ],
                      "signatureRrdatas": [ # DNSSEC generated signatures for all the rrdata within this item. Note that if health checked targets are provided for DNSSEC enabled zones, there's a restriction of 1 ip per item. .
                        "A String",
                      ],
                      "weight": 3.14, # The weight corresponding to this subset of rrdata. When multiple WeightedRoundRobinPolicyItems are configured, the probability of returning an rrset is proportional to its weight relative to the sum of weights configured for all items. This weight should be non-negative.
                    },
                  ],
                  "kind": "dns#rRSetRoutingPolicyWrrPolicy",
                },
              },
              "rrdatas": [ # As defined in RFC 1035 (section 5) and RFC 1034 (section 3.6.1) -- see examples.
                "A String",
              ],
              "signatureRrdatas": [ # As defined in RFC 4034 (section 3.2).
                "A String",
              ],
              "ttl": 42, # Number of seconds that this ResourceRecordSet can be cached by resolvers.
              "type": "A String", # The identifier of a supported record type. See the list of Supported DNS record types.
            },
          ],
          "id": "A String", # Unique identifier for the resource; defined by the server (output only).
          "isServing": True or False, # If the DNS queries for the zone will be served.
          "kind": "dns#change",
          "startTime": "A String", # The time that this operation was started by the server (output only). This is in RFC3339 text format.
          "status": "A String", # Status of the operation (output only). A status of "done" means that the request to update the authoritative servers has been sent, but the servers might not be updated yet.
        },
      ],
      "header": { # Elements common to every response.
        "operationId": "A String", # For mutating operation requests that completed successfully. This is the client_operation_id if the client specified it, otherwise it is generated by the server (output only).
      },
      "kind": "dns#changesListResponse", # Type of resource.
      "nextPageToken": "A String", # The presence of this field indicates that there exist more results following your last page of results in pagination order. To fetch them, make another list request using this value as your pagination token. This lets you retrieve the complete contents of even very large collections one page at a time. However, if the contents of the collection change between the first and last paginated list request, the set of all elements returned are an inconsistent view of the collection. You cannot retrieve a "snapshot" of collections larger than the maximum page size.
    }

`list_next()`

    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.