# Compute Engine API . instanceTemplates

## Instance Methods

Deletes the specified instance template. If you delete an instance template that is being referenced from another instance group, the instance group will not be able to create or recreate virtual machine instances. Deleting an instance template is permanent and cannot be undone.

Returns the specified instance template resource.

Creates an instance template in the specified project using the data that is included in the request. If you are creating a new template to update an existing instance group, your new instance template must use the same network or, if applicable, the same subnetwork as the original template.

Retrieves a list of instance templates that are contained within the specified project and zone.

Retrieves the next page of results.

### Method Details

`delete(project, instanceTemplate)`

    Deletes the specified instance template. If you delete an instance template that is being referenced from another instance group, the instance group will not be able to create or recreate virtual machine instances. Deleting an instance template is permanent and cannot be undone.

    Args:
      project: string, Project ID for this request. (required)
      instanceTemplate: string, The name of the instance template to delete. (required)

    Returns:
      An object of the form:

        { # An Operation resource, used to manage asynchronous API requests.
        "targetId": "A String", # [Output Only] The unique target ID, which identifies a specific incarnation of the target resource.
        "clientOperationId": "A String", # [Output Only] Reserved for future use.
        "creationTimestamp": "A String", # [Output Only] Creation timestamp in RFC3339 text format.
        "id": "A String", # [Output Only] The unique identifier for the resource. This identifier is defined by the server.
        "zone": "A String", # [Output Only] The URL of the zone where the operation resides. Only available when performing per-zone operations.
        "insertTime": "A String", # [Output Only] The time that this operation was requested. This value is in RFC3339 text format.
        "operationType": "A String", # [Output Only] The type of operation, such as insert, update, or delete, and so on.
        "httpErrorMessage": "A String", # [Output Only] If the operation fails, this field contains the HTTP error message that was returned, such as NOT FOUND.
        "progress": 42, # [Output Only] An optional progress indicator that ranges from 0 to 100. There is no requirement that this be linear or support any granularity of operations. This should not be used to guess when the operation will be complete. This number should monotonically increase as the operation progresses.
        "httpErrorStatusCode": 42, # [Output Only] If the operation fails, this field contains the HTTP error status code that was returned. For example, a 404 means the resource was not found.
        "statusMessage": "A String", # [Output Only] An optional textual description of the current status of the operation.
        "status": "A String", # [Output Only] The status of the operation, which can be one of the following: PENDING, RUNNING, or DONE.
        "description": "A String", # [Output Only] A textual description of the operation, which is set when the operation is created.
        "warnings": [ # [Output Only] If warning messages are generated during processing of the operation, this field will be populated.
          {
            "message": "A String", # [Output Only] A human-readable description of the warning code.
            "code": "A String", # [Output Only] A warning code, if applicable. For example, Compute Engine returns NO_RESULTS_ON_PAGE if there are no results in the response.
            "data": [ # [Output Only] Metadata about this warning in key: value format. For example:
                # "data": [ { "key": "scope", "value": "zones/us-east1-d" }
              {
                "value": "A String", # [Output Only] A warning data value corresponding to the key.
                "key": "A String", # [Output Only] A key that provides more detail on the warning being returned. For example, for warnings where there are no results in a list request for a particular zone, this key might be scope and the key value might be the zone name. Other examples might be a key indicating a deprecated resource, and a suggested replacement, or a warning about invalid network settings (for example, if an instance attempts to perform IP forwarding but is not enabled for IP forwarding).
              },
            ],
          },
        ],
        "user": "A String", # [Output Only] User who requested the operation, for example: user@example.com.
        "startTime": "A String", # [Output Only] The time that this operation was started by the server. This value is in RFC3339 text format.
        "kind": "compute#operation", # [Output Only] Type of the resource. Always compute#operation for Operation resources.
        "name": "A String", # [Output Only] Name of the resource.
        "region": "A String", # [Output Only] The URL of the region where the operation resides. Only available when performing regional operations.
        "error": { # [Output Only] If errors are generated during processing of the operation, this field will be populated.
          "errors": [ # [Output Only] The array of errors encountered while processing this operation.
            {
              "message": "A String", # [Output Only] An optional, human-readable error message.
              "code": "A String", # [Output Only] The error type identifier for this error.
              "location": "A String", # [Output Only] Indicates the field in the request which caused the error. This property is optional.
            },
          ],
        },
        "endTime": "A String", # [Output Only] The time that this operation was completed. This value is in RFC3339 text format.
        "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
        "targetLink": "A String", # [Output Only] The URL of the resource that the operation modifies.
      }

`get(project, instanceTemplate)`

    Returns the specified instance template resource.

    Args:
      project: string, Project ID for this request. (required)
      instanceTemplate: string, The name of the instance template. (required)

    Returns:
      An object of the form:

        { # An Instance Template resource.
          "kind": "compute#instanceTemplate", # [Output Only] The resource type, which is always compute#instanceTemplate for instance templates.
          "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
          "id": "A String", # [Output Only] A unique identifier for this instance template. The server defines this identifier.
          "creationTimestamp": "A String", # [Output Only] The creation timestamp for this instance template in RFC3339 text format.
          "properties": { # The instance properties for this instance template.
            "machineType": "A String", # The machine type to use for instances that are created from this template.
            "description": "A String", # An optional text description for the instances that are created from this instance template.
            "tags": { # A set of instance tags. # A list of tags to apply to the instances that are created from this template. The tags identify valid sources or targets for network firewalls. The setTags method can modify this list of tags. Each tag within the list must comply with RFC1035.
              "items": [ # An array of tags. Each tag must be 1-63 characters long, and comply with RFC1035.
                "A String",
              ],
              "fingerprint": "A String", # Specifies a fingerprint for this request, which is essentially a hash of the metadata's contents and used for optimistic locking. The fingerprint is initially generated by Compute Engine and changes after every request to modify or update metadata. You must always provide an up-to-date fingerprint hash in order to update or change metadata.
                  #
                  # To see the latest fingerprint, make get() request to the instance.
            },
            "disks": [ # An array of disks that are associated with the instances that are created from this template.
              { # An instance-attached disk resource.
                "deviceName": "A String", # Specifies a unique device name of your choice that is reflected into the /dev/disk/by-id/google-* tree of a Linux operating system running within the instance. This name can be used to reference the device for mounting, resizing, and so on, from within the instance.
                    #
                    # If not specified, the server chooses a default device name to apply to this disk, in the form persistent-disks-x, where x is a number assigned by Google Compute Engine. This field is only applicable for persistent disks.
                "kind": "compute#attachedDisk", # [Output Only] Type of the resource. Always compute#attachedDisk for attached disks.
                "initializeParams": { # [Input Only] Specifies the parameters for a new disk that will be created alongside the new instance. Use initialization parameters to create boot disks or local SSDs attached to the new instance. # [Input Only] Specifies the parameters for a new disk that will be created alongside the new instance. Use initialization parameters to create boot disks or local SSDs attached to the new instance.
                    #
                    # This property is mutually exclusive with the source property; you can only define one or the other, but not both.
                    #
                    # This property is mutually exclusive with the source property; you can only define one or the other, but not both.
                  "diskSizeGb": "A String", # Specifies the size of the disk in base-2 GB.
                  "diskName": "A String", # Specifies the disk name. If not specified, the default is to use the name of the instance.
                  "sourceImage": "A String", # A source image used to create the disk. You can provide a private (custom) image, and Compute Engine will use the corresponding image from your project. For example:
                      #
                      # global/images/my-private-image
                      #
                      # Or you can provide an image from a publicly-available project. For example, to use a Debian image from the debian-cloud project, make sure to include the project in the URL:
                      #
                      # projects/debian-cloud/global/images/debian-7-wheezy-vYYYYMMDD
                      #
                      # where vYYYYMMDD is the image version. The fully-qualified URL will also work in both cases.
                  "diskType": "A String", # Specifies the disk type to use to create the instance. If not specified, the default is pd-standard, specified using the full URL. For example:
                      #
                      # https://www.googleapis.com/compute/v1/projects/project/zones/zone/diskTypes/pd-standard
                      #
                      # Other values include pd-ssd and local-ssd. If you define this field, you can provide either the full or partial URL. For example, the following are valid values:
                      # - https://www.googleapis.com/compute/v1/projects/project/zones/zone/diskTypes/diskType
                      # - projects/project/zones/zone/diskTypes/diskType
                      # - zones/zone/diskTypes/diskType
                },
                "autoDelete": True or False, # Specifies whether the disk will be auto-deleted when the instance is deleted (but not when the disk is detached from the instance).
                "index": 42, # Assigns a zero-based index to this disk, where 0 is reserved for the boot disk. For example, if you have many disks attached to an instance, each disk would have a unique index number. If not specified, the server will choose an appropriate value.
                "boot": True or False, # Indicates that this is a boot disk. The virtual machine will use the first partition of the disk for its root filesystem.
                "licenses": [ # [Output Only] Any valid publicly visible licenses.
                  "A String",
                ],
                "mode": "A String", # The mode in which to attach this disk, either READ_WRITE or READ_ONLY. If not specified, the default is to attach the disk in READ_WRITE mode.
                "interface": "A String", # Specifies the disk interface to use for attaching this disk, which is either SCSI or NVME. The default is SCSI. Persistent disks must always use SCSI and the request will fail if you attempt to attach a persistent disk in any other format than SCSI. Local SSDs can use either NVME or SCSI. For performance characteristics of SCSI over NVMe, see Local SSD performance.
                "type": "A String", # Specifies the type of the disk, either SCRATCH or PERSISTENT. If not specified, the default is PERSISTENT.
                "source": "A String", # Specifies a valid partial or full URL to an existing Persistent Disk resource. This field is only applicable for persistent disks.
              },
            ],
            "scheduling": { # Sets the scheduling options for an Instance. # Specifies the scheduling options for the instances that are created from this template.
              "automaticRestart": True or False, # Specifies whether the instance should be automatically restarted if it is terminated by Compute Engine (not terminated by a user). You can only set the automatic restart option for standard instances. Preemptible instances cannot be automatically restarted.
              "preemptible": True or False, # Whether the instance is preemptible.
              "onHostMaintenance": "A String", # Defines the maintenance behavior for this instance. For standard instances, the default behavior is MIGRATE. For preemptible instances, the default and only possible behavior is TERMINATE. For more information, see Setting Instance Scheduling Options.
            },
            "canIpForward": True or False, # Enables instances created based on this template to send packets with source IP addresses other than their own and receive packets with destination IP addresses other than their own. If these instances will be used as an IP gateway or it will be set as the next-hop in a Route resource, specify true. If unsure, leave this set to false. See the canIpForward documentation for more information.
            "serviceAccounts": [ # A list of service accounts with specified scopes. Access tokens for these service accounts are available to the instances that are created from this template. Use metadata queries to obtain the access tokens for these instances.
              { # A service account.
                "scopes": [ # The list of scopes to be made available for this service account.
                  "A String",
                ],
                "email": "A String", # Email address of the service account.
              },
            ],
            "metadata": { # A metadata key/value entry. # The metadata key/value pairs to assign to instances that are created from this template. These pairs can consist of custom metadata or predefined keys. See Project and instance metadata for more information.
              "items": [ # Array of key/value pairs. The total size of all keys and values must be less than 512 KB.
                {
                  "value": "A String", # Value for the metadata entry. These are free-form strings, and only have meaning as interpreted by the image running in the instance. The only restriction placed on values is that their size must be less than or equal to 32768 bytes.
                  "key": "A String", # Key for the metadata entry. Keys must conform to the following regexp: [a-zA-Z0-9-_]+, and be less than 128 bytes in length. This is reflected as part of a URL in the metadata server. Additionally, to avoid ambiguity, keys must not conflict with any other metadata keys for the project.
                },
              ],
              "kind": "compute#metadata", # [Output Only] Type of the resource. Always compute#metadata for metadata.
              "fingerprint": "A String", # Specifies a fingerprint for this request, which is essentially a hash of the metadata's contents and used for optimistic locking. The fingerprint is initially generated by Compute Engine and changes after every request to modify or update metadata. You must always provide an up-to-date fingerprint hash in order to update or change metadata.
            },
            "networkInterfaces": [ # An array of network access configurations for this interface.
              { # A network interface resource attached to an instance.
                "accessConfigs": [ # An array of configurations for this interface. Currently, ONE_TO_ONE_NAT is the only access config supported. If there are no accessConfigs specified, then this instance will have no external internet access.
                  { # An access configuration attached to an instance's network interface.
                    "kind": "compute#accessConfig", # [Output Only] Type of the resource. Always compute#accessConfig for access configs.
                    "type": "ONE_TO_ONE_NAT", # The type of configuration. The default and only option is ONE_TO_ONE_NAT.
                    "name": "A String", # Name of this access configuration.
                    "natIP": "A String", # An external IP address associated with this instance. Specify an unused static external IP address available to the project or leave this field undefined to use an IP from a shared ephemeral IP address pool. If you specify a static external IP address, it must live in the same region as the zone of the instance.
                  },
                ],
                "networkIP": "A String", # [Output Only] An optional IPV4 internal network address assigned to the instance for this network interface.
                "name": "A String", # [Output Only] The name of the network interface, generated by the server. For network devices, these are eth0, eth1, etc.
                "subnetwork": "A String", # The URL of the Subnetwork resource for this instance. If the network resource is in legacy mode, do not provide this property. If the network is in auto subnet mode, providing the subnetwork is optional. If the network is in custom subnet mode, then this field should be specified. If you specify this property, you can specify the subnetwork as a full or partial URL. For example, the following are all valid URLs:
                    # - https://www.googleapis.com/compute/v1/projects/project/zones/zone/subnetworks/subnetwork
                    # - zones/zone/subnetworks/subnetwork
                "network": "A String", # URL of the network resource for this instance. This is required for creating an instance but optional when creating a firewall rule. If not specified when creating a firewall rule, the default network is used:
                    #
                    # global/networks/default
                    #
                    # If you specify this property, you can specify the network as a full or partial URL. For example, the following are all valid URLs:
                    # - https://www.googleapis.com/compute/v1/projects/project/global/networks/network
                    # - projects/project/global/networks/network
                    # - global/networks/default
              },
            ],
          },
          "selfLink": "A String", # [Output Only] The URL for this instance template. The server defines this URL.
          "name": "A String", # Name of the resource; provided by the client when the resource is created. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression [a-z]([-a-z0-9]*[a-z0-9])? which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
        }

`insert(project, body)`

    Creates an instance template in the specified project using the data that is included in the request. If you are creating a new template to update an existing instance group, your new instance template must use the same network or, if applicable, the same subnetwork as the original template.

    Args:
      project: string, Project ID for this request. (required)
      body: object, The request body. (required)
        The object takes the form of:

    { # An Instance Template resource.
        "kind": "compute#instanceTemplate", # [Output Only] The resource type, which is always compute#instanceTemplate for instance templates.
        "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
        "id": "A String", # [Output Only] A unique identifier for this instance template. The server defines this identifier.
        "creationTimestamp": "A String", # [Output Only] The creation timestamp for this instance template in RFC3339 text format.
        "properties": { # The instance properties for this instance template.
          "machineType": "A String", # The machine type to use for instances that are created from this template.
          "description": "A String", # An optional text description for the instances that are created from this instance template.
          "tags": { # A set of instance tags. # A list of tags to apply to the instances that are created from this template. The tags identify valid sources or targets for network firewalls. The setTags method can modify this list of tags. Each tag within the list must comply with RFC1035.
            "items": [ # An array of tags. Each tag must be 1-63 characters long, and comply with RFC1035.
              "A String",
            ],
            "fingerprint": "A String", # Specifies a fingerprint for this request, which is essentially a hash of the metadata's contents and used for optimistic locking. The fingerprint is initially generated by Compute Engine and changes after every request to modify or update metadata. You must always provide an up-to-date fingerprint hash in order to update or change metadata.
                #
                # To see the latest fingerprint, make get() request to the instance.
          },
          "disks": [ # An array of disks that are associated with the instances that are created from this template.
            { # An instance-attached disk resource.
              "deviceName": "A String", # Specifies a unique device name of your choice that is reflected into the /dev/disk/by-id/google-* tree of a Linux operating system running within the instance. This name can be used to reference the device for mounting, resizing, and so on, from within the instance.
                  #
                  # If not specified, the server chooses a default device name to apply to this disk, in the form persistent-disks-x, where x is a number assigned by Google Compute Engine. This field is only applicable for persistent disks.
              "kind": "compute#attachedDisk", # [Output Only] Type of the resource. Always compute#attachedDisk for attached disks.
              "initializeParams": { # [Input Only] Specifies the parameters for a new disk that will be created alongside the new instance. Use initialization parameters to create boot disks or local SSDs attached to the new instance. # [Input Only] Specifies the parameters for a new disk that will be created alongside the new instance. Use initialization parameters to create boot disks or local SSDs attached to the new instance.
                  #
                  # This property is mutually exclusive with the source property; you can only define one or the other, but not both.
                  #
                  # This property is mutually exclusive with the source property; you can only define one or the other, but not both.
                "diskSizeGb": "A String", # Specifies the size of the disk in base-2 GB.
                "diskName": "A String", # Specifies the disk name. If not specified, the default is to use the name of the instance.
                "sourceImage": "A String", # A source image used to create the disk. You can provide a private (custom) image, and Compute Engine will use the corresponding image from your project. For example:
                    #
                    # global/images/my-private-image
                    #
                    # Or you can provide an image from a publicly-available project. For example, to use a Debian image from the debian-cloud project, make sure to include the project in the URL:
                    #
                    # projects/debian-cloud/global/images/debian-7-wheezy-vYYYYMMDD
                    #
                    # where vYYYYMMDD is the image version. The fully-qualified URL will also work in both cases.
                "diskType": "A String", # Specifies the disk type to use to create the instance. If not specified, the default is pd-standard, specified using the full URL. For example:
                    #
                    # https://www.googleapis.com/compute/v1/projects/project/zones/zone/diskTypes/pd-standard
                    #
                    # Other values include pd-ssd and local-ssd. If you define this field, you can provide either the full or partial URL. For example, the following are valid values:
                    # - https://www.googleapis.com/compute/v1/projects/project/zones/zone/diskTypes/diskType
                    # - projects/project/zones/zone/diskTypes/diskType
                    # - zones/zone/diskTypes/diskType
              },
              "autoDelete": True or False, # Specifies whether the disk will be auto-deleted when the instance is deleted (but not when the disk is detached from the instance).
              "index": 42, # Assigns a zero-based index to this disk, where 0 is reserved for the boot disk. For example, if you have many disks attached to an instance, each disk would have a unique index number. If not specified, the server will choose an appropriate value.
              "boot": True or False, # Indicates that this is a boot disk. The virtual machine will use the first partition of the disk for its root filesystem.
              "licenses": [ # [Output Only] Any valid publicly visible licenses.
                "A String",
              ],
              "mode": "A String", # The mode in which to attach this disk, either READ_WRITE or READ_ONLY. If not specified, the default is to attach the disk in READ_WRITE mode.
              "interface": "A String", # Specifies the disk interface to use for attaching this disk, which is either SCSI or NVME. The default is SCSI. Persistent disks must always use SCSI and the request will fail if you attempt to attach a persistent disk in any other format than SCSI. Local SSDs can use either NVME or SCSI. For performance characteristics of SCSI over NVMe, see Local SSD performance.
              "type": "A String", # Specifies the type of the disk, either SCRATCH or PERSISTENT. If not specified, the default is PERSISTENT.
              "source": "A String", # Specifies a valid partial or full URL to an existing Persistent Disk resource. This field is only applicable for persistent disks.
            },
          ],
          "scheduling": { # Sets the scheduling options for an Instance. # Specifies the scheduling options for the instances that are created from this template.
            "automaticRestart": True or False, # Specifies whether the instance should be automatically restarted if it is terminated by Compute Engine (not terminated by a user). You can only set the automatic restart option for standard instances. Preemptible instances cannot be automatically restarted.
            "preemptible": True or False, # Whether the instance is preemptible.
            "onHostMaintenance": "A String", # Defines the maintenance behavior for this instance. For standard instances, the default behavior is MIGRATE. For preemptible instances, the default and only possible behavior is TERMINATE. For more information, see Setting Instance Scheduling Options.
          },
          "canIpForward": True or False, # Enables instances created based on this template to send packets with source IP addresses other than their own and receive packets with destination IP addresses other than their own. If these instances will be used as an IP gateway or it will be set as the next-hop in a Route resource, specify true. If unsure, leave this set to false. See the canIpForward documentation for more information.
          "serviceAccounts": [ # A list of service accounts with specified scopes. Access tokens for these service accounts are available to the instances that are created from this template. Use metadata queries to obtain the access tokens for these instances.
            { # A service account.
              "scopes": [ # The list of scopes to be made available for this service account.
                "A String",
              ],
              "email": "A String", # Email address of the service account.
            },
          ],
          "metadata": { # A metadata key/value entry. # The metadata key/value pairs to assign to instances that are created from this template. These pairs can consist of custom metadata or predefined keys. See Project and instance metadata for more information.
            "items": [ # Array of key/value pairs. The total size of all keys and values must be less than 512 KB.
              {
                "value": "A String", # Value for the metadata entry. These are free-form strings, and only have meaning as interpreted by the image running in the instance. The only restriction placed on values is that their size must be less than or equal to 32768 bytes.
                "key": "A String", # Key for the metadata entry. Keys must conform to the following regexp: [a-zA-Z0-9-_]+, and be less than 128 bytes in length. This is reflected as part of a URL in the metadata server. Additionally, to avoid ambiguity, keys must not conflict with any other metadata keys for the project.
              },
            ],
            "kind": "compute#metadata", # [Output Only] Type of the resource. Always compute#metadata for metadata.
            "fingerprint": "A String", # Specifies a fingerprint for this request, which is essentially a hash of the metadata's contents and used for optimistic locking. The fingerprint is initially generated by Compute Engine and changes after every request to modify or update metadata. You must always provide an up-to-date fingerprint hash in order to update or change metadata.
          },
          "networkInterfaces": [ # An array of network access configurations for this interface.
            { # A network interface resource attached to an instance.
              "accessConfigs": [ # An array of configurations for this interface. Currently, ONE_TO_ONE_NAT is the only access config supported. If there are no accessConfigs specified, then this instance will have no external internet access.
                { # An access configuration attached to an instance's network interface.
                  "kind": "compute#accessConfig", # [Output Only] Type of the resource. Always compute#accessConfig for access configs.
                  "type": "ONE_TO_ONE_NAT", # The type of configuration. The default and only option is ONE_TO_ONE_NAT.
                  "name": "A String", # Name of this access configuration.
                  "natIP": "A String", # An external IP address associated with this instance. Specify an unused static external IP address available to the project or leave this field undefined to use an IP from a shared ephemeral IP address pool. If you specify a static external IP address, it must live in the same region as the zone of the instance.
                },
              ],
              "networkIP": "A String", # [Output Only] An optional IPV4 internal network address assigned to the instance for this network interface.
              "name": "A String", # [Output Only] The name of the network interface, generated by the server. For network devices, these are eth0, eth1, etc.
              "subnetwork": "A String", # The URL of the Subnetwork resource for this instance. If the network resource is in legacy mode, do not provide this property. If the network is in auto subnet mode, providing the subnetwork is optional. If the network is in custom subnet mode, then this field should be specified. If you specify this property, you can specify the subnetwork as a full or partial URL. For example, the following are all valid URLs:
                  # - https://www.googleapis.com/compute/v1/projects/project/zones/zone/subnetworks/subnetwork
                  # - zones/zone/subnetworks/subnetwork
              "network": "A String", # URL of the network resource for this instance. This is required for creating an instance but optional when creating a firewall rule. If not specified when creating a firewall rule, the default network is used:
                  #
                  # global/networks/default
                  #
                  # If you specify this property, you can specify the network as a full or partial URL. For example, the following are all valid URLs:
                  # - https://www.googleapis.com/compute/v1/projects/project/global/networks/network
                  # - projects/project/global/networks/network
                  # - global/networks/default
            },
          ],
        },
        "selfLink": "A String", # [Output Only] The URL for this instance template. The server defines this URL.
        "name": "A String", # Name of the resource; provided by the client when the resource is created. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression [a-z]([-a-z0-9]*[a-z0-9])? which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
      }

    Returns:
      An object of the form:

        { # An Operation resource, used to manage asynchronous API requests.
        "targetId": "A String", # [Output Only] The unique target ID, which identifies a specific incarnation of the target resource.
        "clientOperationId": "A String", # [Output Only] Reserved for future use.
        "creationTimestamp": "A String", # [Output Only] Creation timestamp in RFC3339 text format.
        "id": "A String", # [Output Only] The unique identifier for the resource. This identifier is defined by the server.
        "zone": "A String", # [Output Only] The URL of the zone where the operation resides. Only available when performing per-zone operations.
        "insertTime": "A String", # [Output Only] The time that this operation was requested. This value is in RFC3339 text format.
        "operationType": "A String", # [Output Only] The type of operation, such as insert, update, or delete, and so on.
        "httpErrorMessage": "A String", # [Output Only] If the operation fails, this field contains the HTTP error message that was returned, such as NOT FOUND.
        "progress": 42, # [Output Only] An optional progress indicator that ranges from 0 to 100. There is no requirement that this be linear or support any granularity of operations. This should not be used to guess when the operation will be complete. This number should monotonically increase as the operation progresses.
        "httpErrorStatusCode": 42, # [Output Only] If the operation fails, this field contains the HTTP error status code that was returned. For example, a 404 means the resource was not found.
        "statusMessage": "A String", # [Output Only] An optional textual description of the current status of the operation.
        "status": "A String", # [Output Only] The status of the operation, which can be one of the following: PENDING, RUNNING, or DONE.
        "description": "A String", # [Output Only] A textual description of the operation, which is set when the operation is created.
        "warnings": [ # [Output Only] If warning messages are generated during processing of the operation, this field will be populated.
          {
            "message": "A String", # [Output Only] A human-readable description of the warning code.
            "code": "A String", # [Output Only] A warning code, if applicable. For example, Compute Engine returns NO_RESULTS_ON_PAGE if there are no results in the response.
            "data": [ # [Output Only] Metadata about this warning in key: value format. For example:
                # "data": [ { "key": "scope", "value": "zones/us-east1-d" }
              {
                "value": "A String", # [Output Only] A warning data value corresponding to the key.
                "key": "A String", # [Output Only] A key that provides more detail on the warning being returned. For example, for warnings where there are no results in a list request for a particular zone, this key might be scope and the key value might be the zone name. Other examples might be a key indicating a deprecated resource, and a suggested replacement, or a warning about invalid network settings (for example, if an instance attempts to perform IP forwarding but is not enabled for IP forwarding).
              },
            ],
          },
        ],
        "user": "A String", # [Output Only] User who requested the operation, for example: user@example.com.
        "startTime": "A String", # [Output Only] The time that this operation was started by the server. This value is in RFC3339 text format.
        "kind": "compute#operation", # [Output Only] Type of the resource. Always compute#operation for Operation resources.
        "name": "A String", # [Output Only] Name of the resource.
        "region": "A String", # [Output Only] The URL of the region where the operation resides. Only available when performing regional operations.
        "error": { # [Output Only] If errors are generated during processing of the operation, this field will be populated.
          "errors": [ # [Output Only] The array of errors encountered while processing this operation.
            {
              "message": "A String", # [Output Only] An optional, human-readable error message.
              "code": "A String", # [Output Only] The error type identifier for this error.
              "location": "A String", # [Output Only] Indicates the field in the request which caused the error. This property is optional.
            },
          ],
        },
        "endTime": "A String", # [Output Only] The time that this operation was completed. This value is in RFC3339 text format.
        "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
        "targetLink": "A String", # [Output Only] The URL of the resource that the operation modifies.
      }

`list(project, maxResults=None, pageToken=None, filter=None)`

    Retrieves a list of instance templates that are contained within the specified project and zone.

    Args:
      project: string, Project ID for this request. (required)
      maxResults: integer, The maximum number of results per page that should be returned. If the number of available results is larger than maxResults, Compute Engine returns a nextPageToken that can be used to get the next page of results in subsequent list requests.
      pageToken: string, Specifies a page token to use. Set pageToken to the nextPageToken returned by a previous list request to get the next page of results.
      filter: string, Sets a filter expression for filtering listed resources, in the form filter={expression}. Your {expression} must be in the format: field_name comparison_string literal_string.

    The field_name is the name of the field you want to compare. Only atomic field types are supported (string, number, boolean). The comparison_string must be either eq (equals) or ne (not equals). The literal_string is the string value to filter to. The literal value must be valid for the type of field you are filtering by (string, number, boolean). For string fields, the literal value is interpreted as a regular expression using RE2 syntax. The literal value must match the entire field.

    For example, to filter for instances whose name is not equal to example-instance, you would use filter=name ne example-instance.

    Compute Engine Beta API Only: If you use filtering in the Beta API, you can also filter on nested fields. For example, you could filter on instances that have set the scheduling.automaticRestart field to true. In particular, use filtering on nested fields to take advantage of instance labels to organize and filter results based on label values.

    The Beta API also supports filtering on multiple expressions by providing each separate expression within parentheses. For example, (scheduling.automaticRestart eq true) (zone eq us-central1-f). Multiple expressions are treated as AND expressions meaning that resources must match all expressions to pass the filters.

    Returns:
      An object of the form:

        { # A list of instance templates.
        "nextPageToken": "A String", # [Output Only] This token allows you to get the next page of results for list requests. If the number of results is larger than maxResults, use the nextPageToken as a value for the query parameter pageToken in the next list request. Subsequent list requests will have their own nextPageToken to continue paging through the results.
        "items": [ # [Output Only] list of InstanceTemplate resources.
          { # An Instance Template resource.
              "kind": "compute#instanceTemplate", # [Output Only] The resource type, which is always compute#instanceTemplate for instance templates.
              "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
              "id": "A String", # [Output Only] A unique identifier for this instance template. The server defines this identifier.
              "creationTimestamp": "A String", # [Output Only] The creation timestamp for this instance template in RFC3339 text format.
              "properties": { # The instance properties for this instance template.
                "machineType": "A String", # The machine type to use for instances that are created from this template.
                "description": "A String", # An optional text description for the instances that are created from this instance template.
                "tags": { # A set of instance tags. # A list of tags to apply to the instances that are created from this template. The tags identify valid sources or targets for network firewalls. The setTags method can modify this list of tags. Each tag within the list must comply with RFC1035.
                  "items": [ # An array of tags. Each tag must be 1-63 characters long, and comply with RFC1035.
                    "A String",
                  ],
                  "fingerprint": "A String", # Specifies a fingerprint for this request, which is essentially a hash of the metadata's contents and used for optimistic locking. The fingerprint is initially generated by Compute Engine and changes after every request to modify or update metadata. You must always provide an up-to-date fingerprint hash in order to update or change metadata.
                      #
                      # To see the latest fingerprint, make get() request to the instance.
                },
                "disks": [ # An array of disks that are associated with the instances that are created from this template.
                  { # An instance-attached disk resource.
                    "deviceName": "A String", # Specifies a unique device name of your choice that is reflected into the /dev/disk/by-id/google-* tree of a Linux operating system running within the instance. This name can be used to reference the device for mounting, resizing, and so on, from within the instance.
                        #
                        # If not specified, the server chooses a default device name to apply to this disk, in the form persistent-disks-x, where x is a number assigned by Google Compute Engine. This field is only applicable for persistent disks.
                    "kind": "compute#attachedDisk", # [Output Only] Type of the resource. Always compute#attachedDisk for attached disks.
                    "initializeParams": { # [Input Only] Specifies the parameters for a new disk that will be created alongside the new instance. Use initialization parameters to create boot disks or local SSDs attached to the new instance. # [Input Only] Specifies the parameters for a new disk that will be created alongside the new instance. Use initialization parameters to create boot disks or local SSDs attached to the new instance.
                        #
                        # This property is mutually exclusive with the source property; you can only define one or the other, but not both.
                        #
                        # This property is mutually exclusive with the source property; you can only define one or the other, but not both.
                      "diskSizeGb": "A String", # Specifies the size of the disk in base-2 GB.
                      "diskName": "A String", # Specifies the disk name. If not specified, the default is to use the name of the instance.
                      "sourceImage": "A String", # A source image used to create the disk. You can provide a private (custom) image, and Compute Engine will use the corresponding image from your project. For example:
                          #
                          # global/images/my-private-image
                          #
                          # Or you can provide an image from a publicly-available project. For example, to use a Debian image from the debian-cloud project, make sure to include the project in the URL:
                          #
                          # projects/debian-cloud/global/images/debian-7-wheezy-vYYYYMMDD
                          #
                          # where vYYYYMMDD is the image version. The fully-qualified URL will also work in both cases.
                      "diskType": "A String", # Specifies the disk type to use to create the instance. If not specified, the default is pd-standard, specified using the full URL. For example:
                          #
                          # https://www.googleapis.com/compute/v1/projects/project/zones/zone/diskTypes/pd-standard
                          #
                          # Other values include pd-ssd and local-ssd. If you define this field, you can provide either the full or partial URL. For example, the following are valid values:
                          # - https://www.googleapis.com/compute/v1/projects/project/zones/zone/diskTypes/diskType
                          # - projects/project/zones/zone/diskTypes/diskType
                          # - zones/zone/diskTypes/diskType
                    },
                    "autoDelete": True or False, # Specifies whether the disk will be auto-deleted when the instance is deleted (but not when the disk is detached from the instance).
                    "index": 42, # Assigns a zero-based index to this disk, where 0 is reserved for the boot disk. For example, if you have many disks attached to an instance, each disk would have a unique index number. If not specified, the server will choose an appropriate value.
                    "boot": True or False, # Indicates that this is a boot disk. The virtual machine will use the first partition of the disk for its root filesystem.
                    "licenses": [ # [Output Only] Any valid publicly visible licenses.
                      "A String",
                    ],
                    "mode": "A String", # The mode in which to attach this disk, either READ_WRITE or READ_ONLY. If not specified, the default is to attach the disk in READ_WRITE mode.
                    "interface": "A String", # Specifies the disk interface to use for attaching this disk, which is either SCSI or NVME. The default is SCSI. Persistent disks must always use SCSI and the request will fail if you attempt to attach a persistent disk in any other format than SCSI. Local SSDs can use either NVME or SCSI. For performance characteristics of SCSI over NVMe, see Local SSD performance.
                    "type": "A String", # Specifies the type of the disk, either SCRATCH or PERSISTENT. If not specified, the default is PERSISTENT.
                    "source": "A String", # Specifies a valid partial or full URL to an existing Persistent Disk resource. This field is only applicable for persistent disks.
                  },
                ],
                "scheduling": { # Sets the scheduling options for an Instance. # Specifies the scheduling options for the instances that are created from this template.
                  "automaticRestart": True or False, # Specifies whether the instance should be automatically restarted if it is terminated by Compute Engine (not terminated by a user). You can only set the automatic restart option for standard instances. Preemptible instances cannot be automatically restarted.
                  "preemptible": True or False, # Whether the instance is preemptible.
                  "onHostMaintenance": "A String", # Defines the maintenance behavior for this instance. For standard instances, the default behavior is MIGRATE. For preemptible instances, the default and only possible behavior is TERMINATE. For more information, see Setting Instance Scheduling Options.
                },
                "canIpForward": True or False, # Enables instances created based on this template to send packets with source IP addresses other than their own and receive packets with destination IP addresses other than their own. If these instances will be used as an IP gateway or it will be set as the next-hop in a Route resource, specify true. If unsure, leave this set to false. See the canIpForward documentation for more information.
                "serviceAccounts": [ # A list of service accounts with specified scopes. Access tokens for these service accounts are available to the instances that are created from this template. Use metadata queries to obtain the access tokens for these instances.
                  { # A service account.
                    "scopes": [ # The list of scopes to be made available for this service account.
                      "A String",
                    ],
                    "email": "A String", # Email address of the service account.
                  },
                ],
                "metadata": { # A metadata key/value entry. # The metadata key/value pairs to assign to instances that are created from this template. These pairs can consist of custom metadata or predefined keys. See Project and instance metadata for more information.
                  "items": [ # Array of key/value pairs. The total size of all keys and values must be less than 512 KB.
                    {
                      "value": "A String", # Value for the metadata entry. These are free-form strings, and only have meaning as interpreted by the image running in the instance. The only restriction placed on values is that their size must be less than or equal to 32768 bytes.
                      "key": "A String", # Key for the metadata entry. Keys must conform to the following regexp: [a-zA-Z0-9-_]+, and be less than 128 bytes in length. This is reflected as part of a URL in the metadata server. Additionally, to avoid ambiguity, keys must not conflict with any other metadata keys for the project.
                    },
                  ],
                  "kind": "compute#metadata", # [Output Only] Type of the resource. Always compute#metadata for metadata.
                  "fingerprint": "A String", # Specifies a fingerprint for this request, which is essentially a hash of the metadata's contents and used for optimistic locking. The fingerprint is initially generated by Compute Engine and changes after every request to modify or update metadata. You must always provide an up-to-date fingerprint hash in order to update or change metadata.
                },
                "networkInterfaces": [ # An array of network access configurations for this interface.
                  { # A network interface resource attached to an instance.
                    "accessConfigs": [ # An array of configurations for this interface. Currently, ONE_TO_ONE_NAT is the only access config supported. If there are no accessConfigs specified, then this instance will have no external internet access.
                      { # An access configuration attached to an instance's network interface.
                        "kind": "compute#accessConfig", # [Output Only] Type of the resource. Always compute#accessConfig for access configs.
                        "type": "ONE_TO_ONE_NAT", # The type of configuration. The default and only option is ONE_TO_ONE_NAT.
                        "name": "A String", # Name of this access configuration.
                        "natIP": "A String", # An external IP address associated with this instance. Specify an unused static external IP address available to the project or leave this field undefined to use an IP from a shared ephemeral IP address pool. If you specify a static external IP address, it must live in the same region as the zone of the instance.
                      },
                    ],
                    "networkIP": "A String", # [Output Only] An optional IPV4 internal network address assigned to the instance for this network interface.
                    "name": "A String", # [Output Only] The name of the network interface, generated by the server. For network devices, these are eth0, eth1, etc.
                    "subnetwork": "A String", # The URL of the Subnetwork resource for this instance. If the network resource is in legacy mode, do not provide this property. If the network is in auto subnet mode, providing the subnetwork is optional. If the network is in custom subnet mode, then this field should be specified. If you specify this property, you can specify the subnetwork as a full or partial URL. For example, the following are all valid URLs:
                        # - https://www.googleapis.com/compute/v1/projects/project/zones/zone/subnetworks/subnetwork
                        # - zones/zone/subnetworks/subnetwork
                    "network": "A String", # URL of the network resource for this instance. This is required for creating an instance but optional when creating a firewall rule. If not specified when creating a firewall rule, the default network is used:
                        #
                        # global/networks/default
                        #
                        # If you specify this property, you can specify the network as a full or partial URL. For example, the following are all valid URLs:
                        # - https://www.googleapis.com/compute/v1/projects/project/global/networks/network
                        # - projects/project/global/networks/network
                        # - global/networks/default
                  },
                ],
              },
              "selfLink": "A String", # [Output Only] The URL for this instance template. The server defines this URL.
              "name": "A String", # Name of the resource; provided by the client when the resource is created. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression [a-z]([-a-z0-9]*[a-z0-9])? which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
            },
        ],
        "kind": "compute#instanceTemplateList", # [Output Only] The resource type, which is always compute#instanceTemplatesListResponse for instance template lists.
        "id": "A String", # [Output Only] A unique identifier for this instance template. The server defines this identifier.
        "selfLink": "A String", # [Output Only] The URL for this instance template list. The server defines this URL.
      }

`list_next(previous_request, previous_response)`

    Retrieves the next page of results.

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

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