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

/*
 * GENERATED CODE WARNING
 * Generated by gapic-generator-php from the file
 * https://github.com/googleapis/googleapis/blob/master/google/cloud/compute/v1/compute.proto
 * Updates to the above are reflected here through a refresh process.
 */

namespace Google\Cloud\Compute\V1\Gapic;

use Google\ApiCore\ApiException;
use Google\ApiCore\CredentialsWrapper;

use Google\ApiCore\GapicClientTrait;
use Google\ApiCore\OperationResponse;
use Google\ApiCore\RequestParamsHeaderDescriptor;
use Google\ApiCore\RetrySettings;
use Google\ApiCore\Transport\TransportInterface;
use Google\ApiCore\ValidationException;
use Google\Auth\FetchAuthTokenInterface;
use Google\Cloud\Compute\V1\AddResourcePoliciesDiskRequest;
use Google\Cloud\Compute\V1\AggregatedListDisksRequest;
use Google\Cloud\Compute\V1\CreateSnapshotDiskRequest;
use Google\Cloud\Compute\V1\DeleteDiskRequest;
use Google\Cloud\Compute\V1\Disk;
use Google\Cloud\Compute\V1\DiskAggregatedList;
use Google\Cloud\Compute\V1\DiskList;
use Google\Cloud\Compute\V1\DisksAddResourcePoliciesRequest;
use Google\Cloud\Compute\V1\DisksRemoveResourcePoliciesRequest;
use Google\Cloud\Compute\V1\DisksResizeRequest;
use Google\Cloud\Compute\V1\GetDiskRequest;
use Google\Cloud\Compute\V1\GetIamPolicyDiskRequest;
use Google\Cloud\Compute\V1\InsertDiskRequest;
use Google\Cloud\Compute\V1\ListDisksRequest;
use Google\Cloud\Compute\V1\Operation;
use Google\Cloud\Compute\V1\Policy;
use Google\Cloud\Compute\V1\RemoveResourcePoliciesDiskRequest;
use Google\Cloud\Compute\V1\ResizeDiskRequest;
use Google\Cloud\Compute\V1\SetIamPolicyDiskRequest;
use Google\Cloud\Compute\V1\SetLabelsDiskRequest;
use Google\Cloud\Compute\V1\Snapshot;
use Google\Cloud\Compute\V1\TestIamPermissionsDiskRequest;
use Google\Cloud\Compute\V1\TestPermissionsRequest;
use Google\Cloud\Compute\V1\TestPermissionsResponse;
use Google\Cloud\Compute\V1\ZoneOperationsClient;
use Google\Cloud\Compute\V1\ZoneSetLabelsRequest;
use Google\Cloud\Compute\V1\ZoneSetPolicyRequest;

/**
 * Service Description: The Disks API.
 *
 * This class provides the ability to make remote calls to the backing service through method
 * calls that map to API methods. Sample code to get started:
 *
 * ```
 * $disksClient = new DisksClient();
 * try {
 *     $disk = 'disk';
 *     $disksAddResourcePoliciesRequestResource = new DisksAddResourcePoliciesRequest();
 *     $project = 'project';
 *     $zone = 'zone';
 *     $operationResponse = $disksClient->addResourcePolicies($disk, $disksAddResourcePoliciesRequestResource, $project, $zone);
 *     $operationResponse->pollUntilComplete();
 *     if ($operationResponse->operationSucceeded()) {
 *         // if creating/modifying, retrieve the target resource
 *     } else {
 *         $error = $operationResponse->getError();
 *         // handleError($error)
 *     }
 *     // Alternatively:
 *     // start the operation, keep the operation name, and resume later
 *     $operationResponse = $disksClient->addResourcePolicies($disk, $disksAddResourcePoliciesRequestResource, $project, $zone);
 *     $operationName = $operationResponse->getName();
 *     // ... do other work
 *     $newOperationResponse = $disksClient->resumeOperation($operationName, 'addResourcePolicies');
 *     while (!$newOperationResponse->isDone()) {
 *         // ... do other work
 *         $newOperationResponse->reload();
 *     }
 *     if ($newOperationResponse->operationSucceeded()) {
 *         // if creating/modifying, retrieve the target resource
 *     } else {
 *         $error = $newOperationResponse->getError();
 *         // handleError($error)
 *     }
 * } finally {
 *     $disksClient->close();
 * }
 * ```
 */
class DisksGapicClient
{
    use GapicClientTrait;

    /**
     * The name of the service.
     */
    const SERVICE_NAME = 'google.cloud.compute.v1.Disks';

    /**
     * The default address of the service.
     */
    const SERVICE_ADDRESS = 'compute.googleapis.com';

    /**
     * The default port of the service.
     */
    const DEFAULT_SERVICE_PORT = 443;

    /**
     * The name of the code generator, to be included in the agent header.
     */
    const CODEGEN_NAME = 'gapic';

    /**
     * The default scopes required by the service.
     */
    public static $serviceScopes = [
        'https://www.googleapis.com/auth/compute',
        'https://www.googleapis.com/auth/cloud-platform',
    ];

    private $operationsClient;

    private static function getClientDefaults()
    {
        return [
            'serviceName' => self::SERVICE_NAME,
            'apiEndpoint' => self::SERVICE_ADDRESS . ':' . self::DEFAULT_SERVICE_PORT,
            'clientConfig' => __DIR__ . '/../resources/disks_client_config.json',
            'descriptorsConfigPath' => __DIR__ . '/../resources/disks_descriptor_config.php',
            'credentialsConfig' => [
                'defaultScopes' => self::$serviceScopes,
                'useJwtAccessWithScope' => false,
            ],
            'transportConfig' => [
                'rest' => [
                    'restClientConfigPath' => __DIR__ . '/../resources/disks_rest_client_config.php',
                ],
            ],
            'operationsClientClass' => ZoneOperationsClient::class,
        ];
    }

    /**
     * Implements GapicClientTrait::defaultTransport.
     */
    private static function defaultTransport()
    {
        return 'rest';
    }

    /**
     * Implements GapicClientTrait::getSupportedTransports.
     */
    private static function getSupportedTransports()
    {
        return [
            'rest',
        ];
    }

    /**
     * Return an ZoneOperationsClient object with the same endpoint as $this.
     *
     * @return ZoneOperationsClient
     */
    public function getOperationsClient()
    {
        return $this->operationsClient;
    }

    /**
     * Return the default longrunning operation descriptor config.
     */
    private function getDefaultOperationDescriptor()
    {
        return [
            'additionalArgumentMethods' => [
                'getProject',
                'getZone',
            ],
            'getOperationMethod' => 'get',
            'cancelOperationMethod' => null,
            'deleteOperationMethod' => 'delete',
            'operationErrorCodeMethod' => 'getHttpErrorStatusCode',
            'operationErrorMessageMethod' => 'getHttpErrorMessage',
            'operationNameMethod' => 'getName',
            'operationStatusMethod' => 'getStatus',
            'operationStatusDoneValue' => \Google\Cloud\Compute\V1\Operation\Status::DONE,
        ];
    }

    /**
     * Resume an existing long running operation that was previously started by a long
     * running API method. If $methodName is not provided, or does not match a long
     * running API method, then the operation can still be resumed, but the
     * OperationResponse object will not deserialize the final response.
     *
     * @param string $operationName The name of the long running operation
     * @param string $methodName    The name of the method used to start the operation
     *
     * @return OperationResponse
     */
    public function resumeOperation($operationName, $methodName = null)
    {
        $options = isset($this->descriptors[$methodName]['longRunning']) ? $this->descriptors[$methodName]['longRunning'] : $this->getDefaultOperationDescriptor();
        $operation = new OperationResponse($operationName, $this->getOperationsClient(), $options);
        $operation->reload();
        return $operation;
    }

    /**
     * Constructor.
     *
     * @param array $options {
     *     Optional. Options for configuring the service API wrapper.
     *
     *     @type string $serviceAddress
     *           **Deprecated**. This option will be removed in a future major release. Please
     *           utilize the `$apiEndpoint` option instead.
     *     @type string $apiEndpoint
     *           The address of the API remote host. May optionally include the port, formatted
     *           as "<uri>:<port>". Default 'compute.googleapis.com:443'.
     *     @type string|array|FetchAuthTokenInterface|CredentialsWrapper $credentials
     *           The credentials to be used by the client to authorize API calls. This option
     *           accepts either a path to a credentials file, or a decoded credentials file as a
     *           PHP array.
     *           *Advanced usage*: In addition, this option can also accept a pre-constructed
     *           {@see \Google\Auth\FetchAuthTokenInterface} object or
     *           {@see \Google\ApiCore\CredentialsWrapper} object. Note that when one of these
     *           objects are provided, any settings in $credentialsConfig will be ignored.
     *     @type array $credentialsConfig
     *           Options used to configure credentials, including auth token caching, for the
     *           client. For a full list of supporting configuration options, see
     *           {@see \Google\ApiCore\CredentialsWrapper::build()} .
     *     @type bool $disableRetries
     *           Determines whether or not retries defined by the client configuration should be
     *           disabled. Defaults to `false`.
     *     @type string|array $clientConfig
     *           Client method configuration, including retry settings. This option can be either
     *           a path to a JSON file, or a PHP array containing the decoded JSON data. By
     *           default this settings points to the default client config file, which is
     *           provided in the resources folder.
     *     @type string|TransportInterface $transport
     *           The transport used for executing network requests. At the moment, supports only
     *           `rest`. *Advanced usage*: Additionally, it is possible to pass in an already
     *           instantiated {@see \Google\ApiCore\Transport\TransportInterface} object. Note
     *           that when this object is provided, any settings in $transportConfig, and any
     *           $serviceAddress setting, will be ignored.
     *     @type array $transportConfig
     *           Configuration options that will be used to construct the transport. Options for
     *           each supported transport type should be passed in a key for that transport. For
     *           example:
     *           $transportConfig = [
     *               'rest' => [...],
     *           ];
     *           See the {@see \Google\ApiCore\Transport\RestTransport::build()} method for the
     *           supported options.
     *     @type callable $clientCertSource
     *           A callable which returns the client cert as a string. This can be used to
     *           provide a certificate and private key to the transport layer for mTLS.
     * }
     *
     * @throws ValidationException
     */
    public function __construct(array $options = [])
    {
        $clientOptions = $this->buildClientOptions($options);
        $this->setClientOptions($clientOptions);
        $this->operationsClient = $this->createOperationsClient($clientOptions);
    }

    /**
     * Adds existing resource policies to a disk. You can only add one policy which will be applied to this disk for scheduling snapshot creation.
     *
     * Sample code:
     * ```
     * $disksClient = new DisksClient();
     * try {
     *     $disk = 'disk';
     *     $disksAddResourcePoliciesRequestResource = new DisksAddResourcePoliciesRequest();
     *     $project = 'project';
     *     $zone = 'zone';
     *     $operationResponse = $disksClient->addResourcePolicies($disk, $disksAddResourcePoliciesRequestResource, $project, $zone);
     *     $operationResponse->pollUntilComplete();
     *     if ($operationResponse->operationSucceeded()) {
     *         // if creating/modifying, retrieve the target resource
     *     } else {
     *         $error = $operationResponse->getError();
     *         // handleError($error)
     *     }
     *     // Alternatively:
     *     // start the operation, keep the operation name, and resume later
     *     $operationResponse = $disksClient->addResourcePolicies($disk, $disksAddResourcePoliciesRequestResource, $project, $zone);
     *     $operationName = $operationResponse->getName();
     *     // ... do other work
     *     $newOperationResponse = $disksClient->resumeOperation($operationName, 'addResourcePolicies');
     *     while (!$newOperationResponse->isDone()) {
     *         // ... do other work
     *         $newOperationResponse->reload();
     *     }
     *     if ($newOperationResponse->operationSucceeded()) {
     *         // if creating/modifying, retrieve the target resource
     *     } else {
     *         $error = $newOperationResponse->getError();
     *         // handleError($error)
     *     }
     * } finally {
     *     $disksClient->close();
     * }
     * ```
     *
     * @param string                          $disk                                    The disk name for this request.
     * @param DisksAddResourcePoliciesRequest $disksAddResourcePoliciesRequestResource The body resource for this request
     * @param string                          $project                                 Project ID for this request.
     * @param string                          $zone                                    The name of the zone for this request.
     * @param array                           $optionalArgs                            {
     *     Optional.
     *
     *     @type string $requestId
     *           An optional request ID to identify requests. Specify a unique request ID so that if you must retry your request, the server will know to ignore the request if it has already been completed. For example, consider a situation where you make an initial request and the request times out. If you make the request again with the same request ID, the server can check if original operation with the same request ID was received, and if so, will ignore the second request. This prevents clients from accidentally creating duplicate commitments. The request ID must be a valid UUID with the exception that zero UUID is not supported ( 00000000-0000-0000-0000-000000000000).
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return \Google\ApiCore\OperationResponse
     *
     * @throws ApiException if the remote call fails
     */
    public function addResourcePolicies($disk, $disksAddResourcePoliciesRequestResource, $project, $zone, array $optionalArgs = [])
    {
        $request = new AddResourcePoliciesDiskRequest();
        $requestParamHeaders = [];
        $request->setDisk($disk);
        $request->setDisksAddResourcePoliciesRequestResource($disksAddResourcePoliciesRequestResource);
        $request->setProject($project);
        $request->setZone($zone);
        $requestParamHeaders['disk'] = $disk;
        $requestParamHeaders['project'] = $project;
        $requestParamHeaders['zone'] = $zone;
        if (isset($optionalArgs['requestId'])) {
            $request->setRequestId($optionalArgs['requestId']);
        }

        $requestParams = new RequestParamsHeaderDescriptor($requestParamHeaders);
        $optionalArgs['headers'] = isset($optionalArgs['headers']) ? array_merge($requestParams->getHeader(), $optionalArgs['headers']) : $requestParams->getHeader();
        return $this->startOperationsCall('AddResourcePolicies', $optionalArgs, $request, $this->getOperationsClient(), null, Operation::class)->wait();
    }

    /**
     * Retrieves an aggregated list of persistent disks.
     *
     * Sample code:
     * ```
     * $disksClient = new DisksClient();
     * try {
     *     $project = 'project';
     *     // Iterate over pages of elements
     *     $pagedResponse = $disksClient->aggregatedList($project);
     *     foreach ($pagedResponse->iteratePages() as $page) {
     *         foreach ($page as $key => $element) {
     *             // doSomethingWith($element);
     *         }
     *     }
     *     // Alternatively:
     *     // Iterate through all elements
     *     $pagedResponse = $disksClient->aggregatedList($project);
     *     foreach ($pagedResponse->iterateAllElements() as $element) {
     *         // doSomethingWith($element);
     *     }
     * } finally {
     *     $disksClient->close();
     * }
     * ```
     *
     * @param string $project      Project ID for this request.
     * @param array  $optionalArgs {
     *     Optional.
     *
     *     @type string $filter
     *           A filter expression that filters resources listed in the response. Most Compute resources support two types of filter expressions: expressions that support regular expressions and expressions that follow API improvement proposal AIP-160. If you want to use AIP-160, your expression must specify the field name, an operator, and the value that you want to use for filtering. The value must be a string, a number, or a boolean. The operator must be either `=`, `!=`, `>`, `<`, `<=`, `>=` or `:`. For example, if you are filtering Compute Engine instances, you can exclude instances named `example-instance` by specifying `name != example-instance`. The `:` operator can be used with string fields to match substrings. For non-string fields it is equivalent to the `=` operator. The `:*` comparison can be used to test whether a key has been defined. For example, to find all objects with `owner` label use: ``` labels.owner:* ``` You can also filter nested fields. For example, you could specify `scheduling.automaticRestart = false` to include instances only if they are not scheduled for automatic restarts. You can use filtering on nested fields to filter based on resource labels. To filter on multiple expressions, provide each separate expression within parentheses. For example: ``` (scheduling.automaticRestart = true) (cpuPlatform = "Intel Skylake") ``` By default, each expression is an `AND` expression. However, you can include `AND` and `OR` expressions explicitly. For example: ``` (cpuPlatform = "Intel Skylake") OR (cpuPlatform = "Intel Broadwell") AND (scheduling.automaticRestart = true) ``` If you want to use a regular expression, use the `eq` (equal) or `ne` (not equal) operator against a single un-parenthesized expression with or without quotes or against multiple parenthesized expressions. Examples: `fieldname eq unquoted literal` `fieldname eq 'single quoted literal'` `fieldname eq "double quoted literal"` `(fieldname1 eq literal) (fieldname2 ne "literal")` The literal value is interpreted as a regular expression using Google RE2 library syntax. The literal value must match the entire field. For example, to filter for instances that do not end with name "instance", you would use `name ne .*instance`.
     *     @type bool $includeAllScopes
     *           Indicates whether every visible scope for each scope type (zone, region, global) should be included in the response. For new resource types added after this field, the flag has no effect as new resource types will always include every visible scope for each scope type in response. For resource types which predate this field, if this flag is omitted or false, only scopes of the scope types where the resource type is expected to be found will be included.
     *     @type int $maxResults
     *           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. Acceptable values are `0` to `500`, inclusive. (Default: `500`)
     *     @type string $orderBy
     *           Sorts list results by a certain order. By default, results are returned in alphanumerical order based on the resource name. You can also sort results in descending order based on the creation timestamp using `orderBy="creationTimestamp desc"`. This sorts results based on the `creationTimestamp` field in reverse chronological order (newest result first). Use this to sort resources like operations so that the newest operation is returned first. Currently, only sorting by `name` or `creationTimestamp desc` is supported.
     *     @type string $pageToken
     *           A page token is used to specify a page of values to be returned.
     *           If no page token is specified (the default), the first page
     *           of values will be returned. Any page token used here must have
     *           been generated by a previous call to the API.
     *     @type bool $returnPartialSuccess
     *           Opt-in for partial success behavior which provides partial results in case of failure. The default value is false.
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return \Google\ApiCore\PagedListResponse
     *
     * @throws ApiException if the remote call fails
     */
    public function aggregatedList($project, array $optionalArgs = [])
    {
        $request = new AggregatedListDisksRequest();
        $requestParamHeaders = [];
        $request->setProject($project);
        $requestParamHeaders['project'] = $project;
        if (isset($optionalArgs['filter'])) {
            $request->setFilter($optionalArgs['filter']);
        }

        if (isset($optionalArgs['includeAllScopes'])) {
            $request->setIncludeAllScopes($optionalArgs['includeAllScopes']);
        }

        if (isset($optionalArgs['maxResults'])) {
            $request->setMaxResults($optionalArgs['maxResults']);
        }

        if (isset($optionalArgs['orderBy'])) {
            $request->setOrderBy($optionalArgs['orderBy']);
        }

        if (isset($optionalArgs['pageToken'])) {
            $request->setPageToken($optionalArgs['pageToken']);
        }

        if (isset($optionalArgs['returnPartialSuccess'])) {
            $request->setReturnPartialSuccess($optionalArgs['returnPartialSuccess']);
        }

        $requestParams = new RequestParamsHeaderDescriptor($requestParamHeaders);
        $optionalArgs['headers'] = isset($optionalArgs['headers']) ? array_merge($requestParams->getHeader(), $optionalArgs['headers']) : $requestParams->getHeader();
        return $this->getPagedListResponse('AggregatedList', $optionalArgs, DiskAggregatedList::class, $request);
    }

    /**
     * Creates a snapshot of a specified persistent disk. For regular snapshot creation, consider using snapshots.insert instead, as that method supports more features, such as creating snapshots in a project different from the source disk project.
     *
     * Sample code:
     * ```
     * $disksClient = new DisksClient();
     * try {
     *     $disk = 'disk';
     *     $project = 'project';
     *     $snapshotResource = new Snapshot();
     *     $zone = 'zone';
     *     $operationResponse = $disksClient->createSnapshot($disk, $project, $snapshotResource, $zone);
     *     $operationResponse->pollUntilComplete();
     *     if ($operationResponse->operationSucceeded()) {
     *         // if creating/modifying, retrieve the target resource
     *     } else {
     *         $error = $operationResponse->getError();
     *         // handleError($error)
     *     }
     *     // Alternatively:
     *     // start the operation, keep the operation name, and resume later
     *     $operationResponse = $disksClient->createSnapshot($disk, $project, $snapshotResource, $zone);
     *     $operationName = $operationResponse->getName();
     *     // ... do other work
     *     $newOperationResponse = $disksClient->resumeOperation($operationName, 'createSnapshot');
     *     while (!$newOperationResponse->isDone()) {
     *         // ... do other work
     *         $newOperationResponse->reload();
     *     }
     *     if ($newOperationResponse->operationSucceeded()) {
     *         // if creating/modifying, retrieve the target resource
     *     } else {
     *         $error = $newOperationResponse->getError();
     *         // handleError($error)
     *     }
     * } finally {
     *     $disksClient->close();
     * }
     * ```
     *
     * @param string   $disk             Name of the persistent disk to snapshot.
     * @param string   $project          Project ID for this request.
     * @param Snapshot $snapshotResource The body resource for this request
     * @param string   $zone             The name of the zone for this request.
     * @param array    $optionalArgs     {
     *     Optional.
     *
     *     @type bool $guestFlush
     *           [Input Only] Whether to attempt an application consistent snapshot by informing the OS to prepare for the snapshot process.
     *     @type string $requestId
     *           An optional request ID to identify requests. Specify a unique request ID so that if you must retry your request, the server will know to ignore the request if it has already been completed. For example, consider a situation where you make an initial request and the request times out. If you make the request again with the same request ID, the server can check if original operation with the same request ID was received, and if so, will ignore the second request. This prevents clients from accidentally creating duplicate commitments. The request ID must be a valid UUID with the exception that zero UUID is not supported ( 00000000-0000-0000-0000-000000000000).
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return \Google\ApiCore\OperationResponse
     *
     * @throws ApiException if the remote call fails
     */
    public function createSnapshot($disk, $project, $snapshotResource, $zone, array $optionalArgs = [])
    {
        $request = new CreateSnapshotDiskRequest();
        $requestParamHeaders = [];
        $request->setDisk($disk);
        $request->setProject($project);
        $request->setSnapshotResource($snapshotResource);
        $request->setZone($zone);
        $requestParamHeaders['disk'] = $disk;
        $requestParamHeaders['project'] = $project;
        $requestParamHeaders['zone'] = $zone;
        if (isset($optionalArgs['guestFlush'])) {
            $request->setGuestFlush($optionalArgs['guestFlush']);
        }

        if (isset($optionalArgs['requestId'])) {
            $request->setRequestId($optionalArgs['requestId']);
        }

        $requestParams = new RequestParamsHeaderDescriptor($requestParamHeaders);
        $optionalArgs['headers'] = isset($optionalArgs['headers']) ? array_merge($requestParams->getHeader(), $optionalArgs['headers']) : $requestParams->getHeader();
        return $this->startOperationsCall('CreateSnapshot', $optionalArgs, $request, $this->getOperationsClient(), null, Operation::class)->wait();
    }

    /**
     * Deletes the specified persistent disk. Deleting a disk removes its data permanently and is irreversible. However, deleting a disk does not delete any snapshots previously made from the disk. You must separately delete snapshots.
     *
     * Sample code:
     * ```
     * $disksClient = new DisksClient();
     * try {
     *     $disk = 'disk';
     *     $project = 'project';
     *     $zone = 'zone';
     *     $operationResponse = $disksClient->delete($disk, $project, $zone);
     *     $operationResponse->pollUntilComplete();
     *     if ($operationResponse->operationSucceeded()) {
     *         // if creating/modifying, retrieve the target resource
     *     } else {
     *         $error = $operationResponse->getError();
     *         // handleError($error)
     *     }
     *     // Alternatively:
     *     // start the operation, keep the operation name, and resume later
     *     $operationResponse = $disksClient->delete($disk, $project, $zone);
     *     $operationName = $operationResponse->getName();
     *     // ... do other work
     *     $newOperationResponse = $disksClient->resumeOperation($operationName, 'delete');
     *     while (!$newOperationResponse->isDone()) {
     *         // ... do other work
     *         $newOperationResponse->reload();
     *     }
     *     if ($newOperationResponse->operationSucceeded()) {
     *         // if creating/modifying, retrieve the target resource
     *     } else {
     *         $error = $newOperationResponse->getError();
     *         // handleError($error)
     *     }
     * } finally {
     *     $disksClient->close();
     * }
     * ```
     *
     * @param string $disk         Name of the persistent disk to delete.
     * @param string $project      Project ID for this request.
     * @param string $zone         The name of the zone for this request.
     * @param array  $optionalArgs {
     *     Optional.
     *
     *     @type string $requestId
     *           An optional request ID to identify requests. Specify a unique request ID so that if you must retry your request, the server will know to ignore the request if it has already been completed. For example, consider a situation where you make an initial request and the request times out. If you make the request again with the same request ID, the server can check if original operation with the same request ID was received, and if so, will ignore the second request. This prevents clients from accidentally creating duplicate commitments. The request ID must be a valid UUID with the exception that zero UUID is not supported ( 00000000-0000-0000-0000-000000000000).
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return \Google\ApiCore\OperationResponse
     *
     * @throws ApiException if the remote call fails
     */
    public function delete($disk, $project, $zone, array $optionalArgs = [])
    {
        $request = new DeleteDiskRequest();
        $requestParamHeaders = [];
        $request->setDisk($disk);
        $request->setProject($project);
        $request->setZone($zone);
        $requestParamHeaders['disk'] = $disk;
        $requestParamHeaders['project'] = $project;
        $requestParamHeaders['zone'] = $zone;
        if (isset($optionalArgs['requestId'])) {
            $request->setRequestId($optionalArgs['requestId']);
        }

        $requestParams = new RequestParamsHeaderDescriptor($requestParamHeaders);
        $optionalArgs['headers'] = isset($optionalArgs['headers']) ? array_merge($requestParams->getHeader(), $optionalArgs['headers']) : $requestParams->getHeader();
        return $this->startOperationsCall('Delete', $optionalArgs, $request, $this->getOperationsClient(), null, Operation::class)->wait();
    }

    /**
     * Returns a specified persistent disk. Gets a list of available persistent disks by making a list() request.
     *
     * Sample code:
     * ```
     * $disksClient = new DisksClient();
     * try {
     *     $disk = 'disk';
     *     $project = 'project';
     *     $zone = 'zone';
     *     $response = $disksClient->get($disk, $project, $zone);
     * } finally {
     *     $disksClient->close();
     * }
     * ```
     *
     * @param string $disk         Name of the persistent disk to return.
     * @param string $project      Project ID for this request.
     * @param string $zone         The name of the zone for this request.
     * @param array  $optionalArgs {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return \Google\Cloud\Compute\V1\Disk
     *
     * @throws ApiException if the remote call fails
     */
    public function get($disk, $project, $zone, array $optionalArgs = [])
    {
        $request = new GetDiskRequest();
        $requestParamHeaders = [];
        $request->setDisk($disk);
        $request->setProject($project);
        $request->setZone($zone);
        $requestParamHeaders['disk'] = $disk;
        $requestParamHeaders['project'] = $project;
        $requestParamHeaders['zone'] = $zone;
        $requestParams = new RequestParamsHeaderDescriptor($requestParamHeaders);
        $optionalArgs['headers'] = isset($optionalArgs['headers']) ? array_merge($requestParams->getHeader(), $optionalArgs['headers']) : $requestParams->getHeader();
        return $this->startCall('Get', Disk::class, $optionalArgs, $request)->wait();
    }

    /**
     * Gets the access control policy for a resource. May be empty if no such policy or resource exists.
     *
     * Sample code:
     * ```
     * $disksClient = new DisksClient();
     * try {
     *     $project = 'project';
     *     $resource = 'resource';
     *     $zone = 'zone';
     *     $response = $disksClient->getIamPolicy($project, $resource, $zone);
     * } finally {
     *     $disksClient->close();
     * }
     * ```
     *
     * @param string $project      Project ID for this request.
     * @param string $resource     Name or id of the resource for this request.
     * @param string $zone         The name of the zone for this request.
     * @param array  $optionalArgs {
     *     Optional.
     *
     *     @type int $optionsRequestedPolicyVersion
     *           Requested IAM Policy version.
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return \Google\Cloud\Compute\V1\Policy
     *
     * @throws ApiException if the remote call fails
     */
    public function getIamPolicy($project, $resource, $zone, array $optionalArgs = [])
    {
        $request = new GetIamPolicyDiskRequest();
        $requestParamHeaders = [];
        $request->setProject($project);
        $request->setResource($resource);
        $request->setZone($zone);
        $requestParamHeaders['project'] = $project;
        $requestParamHeaders['resource'] = $resource;
        $requestParamHeaders['zone'] = $zone;
        if (isset($optionalArgs['optionsRequestedPolicyVersion'])) {
            $request->setOptionsRequestedPolicyVersion($optionalArgs['optionsRequestedPolicyVersion']);
        }

        $requestParams = new RequestParamsHeaderDescriptor($requestParamHeaders);
        $optionalArgs['headers'] = isset($optionalArgs['headers']) ? array_merge($requestParams->getHeader(), $optionalArgs['headers']) : $requestParams->getHeader();
        return $this->startCall('GetIamPolicy', Policy::class, $optionalArgs, $request)->wait();
    }

    /**
     * Creates a persistent disk in the specified project using the data in the request. You can create a disk from a source (sourceImage, sourceSnapshot, or sourceDisk) or create an empty 500 GB data disk by omitting all properties. You can also create a disk that is larger than the default size by specifying the sizeGb property.
     *
     * Sample code:
     * ```
     * $disksClient = new DisksClient();
     * try {
     *     $diskResource = new Disk();
     *     $project = 'project';
     *     $zone = 'zone';
     *     $operationResponse = $disksClient->insert($diskResource, $project, $zone);
     *     $operationResponse->pollUntilComplete();
     *     if ($operationResponse->operationSucceeded()) {
     *         // if creating/modifying, retrieve the target resource
     *     } else {
     *         $error = $operationResponse->getError();
     *         // handleError($error)
     *     }
     *     // Alternatively:
     *     // start the operation, keep the operation name, and resume later
     *     $operationResponse = $disksClient->insert($diskResource, $project, $zone);
     *     $operationName = $operationResponse->getName();
     *     // ... do other work
     *     $newOperationResponse = $disksClient->resumeOperation($operationName, 'insert');
     *     while (!$newOperationResponse->isDone()) {
     *         // ... do other work
     *         $newOperationResponse->reload();
     *     }
     *     if ($newOperationResponse->operationSucceeded()) {
     *         // if creating/modifying, retrieve the target resource
     *     } else {
     *         $error = $newOperationResponse->getError();
     *         // handleError($error)
     *     }
     * } finally {
     *     $disksClient->close();
     * }
     * ```
     *
     * @param Disk   $diskResource The body resource for this request
     * @param string $project      Project ID for this request.
     * @param string $zone         The name of the zone for this request.
     * @param array  $optionalArgs {
     *     Optional.
     *
     *     @type string $requestId
     *           An optional request ID to identify requests. Specify a unique request ID so that if you must retry your request, the server will know to ignore the request if it has already been completed. For example, consider a situation where you make an initial request and the request times out. If you make the request again with the same request ID, the server can check if original operation with the same request ID was received, and if so, will ignore the second request. This prevents clients from accidentally creating duplicate commitments. The request ID must be a valid UUID with the exception that zero UUID is not supported ( 00000000-0000-0000-0000-000000000000).
     *     @type string $sourceImage
     *           Source image to restore onto a disk. This field is optional.
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return \Google\ApiCore\OperationResponse
     *
     * @throws ApiException if the remote call fails
     */
    public function insert($diskResource, $project, $zone, array $optionalArgs = [])
    {
        $request = new InsertDiskRequest();
        $requestParamHeaders = [];
        $request->setDiskResource($diskResource);
        $request->setProject($project);
        $request->setZone($zone);
        $requestParamHeaders['project'] = $project;
        $requestParamHeaders['zone'] = $zone;
        if (isset($optionalArgs['requestId'])) {
            $request->setRequestId($optionalArgs['requestId']);
        }

        if (isset($optionalArgs['sourceImage'])) {
            $request->setSourceImage($optionalArgs['sourceImage']);
        }

        $requestParams = new RequestParamsHeaderDescriptor($requestParamHeaders);
        $optionalArgs['headers'] = isset($optionalArgs['headers']) ? array_merge($requestParams->getHeader(), $optionalArgs['headers']) : $requestParams->getHeader();
        return $this->startOperationsCall('Insert', $optionalArgs, $request, $this->getOperationsClient(), null, Operation::class)->wait();
    }

    /**
     * Retrieves a list of persistent disks contained within the specified zone.
     *
     * Sample code:
     * ```
     * $disksClient = new DisksClient();
     * try {
     *     $project = 'project';
     *     $zone = 'zone';
     *     // Iterate over pages of elements
     *     $pagedResponse = $disksClient->list($project, $zone);
     *     foreach ($pagedResponse->iteratePages() as $page) {
     *         foreach ($page as $element) {
     *             // doSomethingWith($element);
     *         }
     *     }
     *     // Alternatively:
     *     // Iterate through all elements
     *     $pagedResponse = $disksClient->list($project, $zone);
     *     foreach ($pagedResponse->iterateAllElements() as $element) {
     *         // doSomethingWith($element);
     *     }
     * } finally {
     *     $disksClient->close();
     * }
     * ```
     *
     * @param string $project      Project ID for this request.
     * @param string $zone         The name of the zone for this request.
     * @param array  $optionalArgs {
     *     Optional.
     *
     *     @type string $filter
     *           A filter expression that filters resources listed in the response. Most Compute resources support two types of filter expressions: expressions that support regular expressions and expressions that follow API improvement proposal AIP-160. If you want to use AIP-160, your expression must specify the field name, an operator, and the value that you want to use for filtering. The value must be a string, a number, or a boolean. The operator must be either `=`, `!=`, `>`, `<`, `<=`, `>=` or `:`. For example, if you are filtering Compute Engine instances, you can exclude instances named `example-instance` by specifying `name != example-instance`. The `:` operator can be used with string fields to match substrings. For non-string fields it is equivalent to the `=` operator. The `:*` comparison can be used to test whether a key has been defined. For example, to find all objects with `owner` label use: ``` labels.owner:* ``` You can also filter nested fields. For example, you could specify `scheduling.automaticRestart = false` to include instances only if they are not scheduled for automatic restarts. You can use filtering on nested fields to filter based on resource labels. To filter on multiple expressions, provide each separate expression within parentheses. For example: ``` (scheduling.automaticRestart = true) (cpuPlatform = "Intel Skylake") ``` By default, each expression is an `AND` expression. However, you can include `AND` and `OR` expressions explicitly. For example: ``` (cpuPlatform = "Intel Skylake") OR (cpuPlatform = "Intel Broadwell") AND (scheduling.automaticRestart = true) ``` If you want to use a regular expression, use the `eq` (equal) or `ne` (not equal) operator against a single un-parenthesized expression with or without quotes or against multiple parenthesized expressions. Examples: `fieldname eq unquoted literal` `fieldname eq 'single quoted literal'` `fieldname eq "double quoted literal"` `(fieldname1 eq literal) (fieldname2 ne "literal")` The literal value is interpreted as a regular expression using Google RE2 library syntax. The literal value must match the entire field. For example, to filter for instances that do not end with name "instance", you would use `name ne .*instance`.
     *     @type int $maxResults
     *           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. Acceptable values are `0` to `500`, inclusive. (Default: `500`)
     *     @type string $orderBy
     *           Sorts list results by a certain order. By default, results are returned in alphanumerical order based on the resource name. You can also sort results in descending order based on the creation timestamp using `orderBy="creationTimestamp desc"`. This sorts results based on the `creationTimestamp` field in reverse chronological order (newest result first). Use this to sort resources like operations so that the newest operation is returned first. Currently, only sorting by `name` or `creationTimestamp desc` is supported.
     *     @type string $pageToken
     *           A page token is used to specify a page of values to be returned.
     *           If no page token is specified (the default), the first page
     *           of values will be returned. Any page token used here must have
     *           been generated by a previous call to the API.
     *     @type bool $returnPartialSuccess
     *           Opt-in for partial success behavior which provides partial results in case of failure. The default value is false.
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return \Google\ApiCore\PagedListResponse
     *
     * @throws ApiException if the remote call fails
     */
    public function list($project, $zone, array $optionalArgs = [])
    {
        $request = new ListDisksRequest();
        $requestParamHeaders = [];
        $request->setProject($project);
        $request->setZone($zone);
        $requestParamHeaders['project'] = $project;
        $requestParamHeaders['zone'] = $zone;
        if (isset($optionalArgs['filter'])) {
            $request->setFilter($optionalArgs['filter']);
        }

        if (isset($optionalArgs['maxResults'])) {
            $request->setMaxResults($optionalArgs['maxResults']);
        }

        if (isset($optionalArgs['orderBy'])) {
            $request->setOrderBy($optionalArgs['orderBy']);
        }

        if (isset($optionalArgs['pageToken'])) {
            $request->setPageToken($optionalArgs['pageToken']);
        }

        if (isset($optionalArgs['returnPartialSuccess'])) {
            $request->setReturnPartialSuccess($optionalArgs['returnPartialSuccess']);
        }

        $requestParams = new RequestParamsHeaderDescriptor($requestParamHeaders);
        $optionalArgs['headers'] = isset($optionalArgs['headers']) ? array_merge($requestParams->getHeader(), $optionalArgs['headers']) : $requestParams->getHeader();
        return $this->getPagedListResponse('List', $optionalArgs, DiskList::class, $request);
    }

    /**
     * Removes resource policies from a disk.
     *
     * Sample code:
     * ```
     * $disksClient = new DisksClient();
     * try {
     *     $disk = 'disk';
     *     $disksRemoveResourcePoliciesRequestResource = new DisksRemoveResourcePoliciesRequest();
     *     $project = 'project';
     *     $zone = 'zone';
     *     $operationResponse = $disksClient->removeResourcePolicies($disk, $disksRemoveResourcePoliciesRequestResource, $project, $zone);
     *     $operationResponse->pollUntilComplete();
     *     if ($operationResponse->operationSucceeded()) {
     *         // if creating/modifying, retrieve the target resource
     *     } else {
     *         $error = $operationResponse->getError();
     *         // handleError($error)
     *     }
     *     // Alternatively:
     *     // start the operation, keep the operation name, and resume later
     *     $operationResponse = $disksClient->removeResourcePolicies($disk, $disksRemoveResourcePoliciesRequestResource, $project, $zone);
     *     $operationName = $operationResponse->getName();
     *     // ... do other work
     *     $newOperationResponse = $disksClient->resumeOperation($operationName, 'removeResourcePolicies');
     *     while (!$newOperationResponse->isDone()) {
     *         // ... do other work
     *         $newOperationResponse->reload();
     *     }
     *     if ($newOperationResponse->operationSucceeded()) {
     *         // if creating/modifying, retrieve the target resource
     *     } else {
     *         $error = $newOperationResponse->getError();
     *         // handleError($error)
     *     }
     * } finally {
     *     $disksClient->close();
     * }
     * ```
     *
     * @param string                             $disk                                       The disk name for this request.
     * @param DisksRemoveResourcePoliciesRequest $disksRemoveResourcePoliciesRequestResource The body resource for this request
     * @param string                             $project                                    Project ID for this request.
     * @param string                             $zone                                       The name of the zone for this request.
     * @param array                              $optionalArgs                               {
     *     Optional.
     *
     *     @type string $requestId
     *           An optional request ID to identify requests. Specify a unique request ID so that if you must retry your request, the server will know to ignore the request if it has already been completed. For example, consider a situation where you make an initial request and the request times out. If you make the request again with the same request ID, the server can check if original operation with the same request ID was received, and if so, will ignore the second request. This prevents clients from accidentally creating duplicate commitments. The request ID must be a valid UUID with the exception that zero UUID is not supported ( 00000000-0000-0000-0000-000000000000).
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return \Google\ApiCore\OperationResponse
     *
     * @throws ApiException if the remote call fails
     */
    public function removeResourcePolicies($disk, $disksRemoveResourcePoliciesRequestResource, $project, $zone, array $optionalArgs = [])
    {
        $request = new RemoveResourcePoliciesDiskRequest();
        $requestParamHeaders = [];
        $request->setDisk($disk);
        $request->setDisksRemoveResourcePoliciesRequestResource($disksRemoveResourcePoliciesRequestResource);
        $request->setProject($project);
        $request->setZone($zone);
        $requestParamHeaders['disk'] = $disk;
        $requestParamHeaders['project'] = $project;
        $requestParamHeaders['zone'] = $zone;
        if (isset($optionalArgs['requestId'])) {
            $request->setRequestId($optionalArgs['requestId']);
        }

        $requestParams = new RequestParamsHeaderDescriptor($requestParamHeaders);
        $optionalArgs['headers'] = isset($optionalArgs['headers']) ? array_merge($requestParams->getHeader(), $optionalArgs['headers']) : $requestParams->getHeader();
        return $this->startOperationsCall('RemoveResourcePolicies', $optionalArgs, $request, $this->getOperationsClient(), null, Operation::class)->wait();
    }

    /**
     * Resizes the specified persistent disk. You can only increase the size of the disk.
     *
     * Sample code:
     * ```
     * $disksClient = new DisksClient();
     * try {
     *     $disk = 'disk';
     *     $disksResizeRequestResource = new DisksResizeRequest();
     *     $project = 'project';
     *     $zone = 'zone';
     *     $operationResponse = $disksClient->resize($disk, $disksResizeRequestResource, $project, $zone);
     *     $operationResponse->pollUntilComplete();
     *     if ($operationResponse->operationSucceeded()) {
     *         // if creating/modifying, retrieve the target resource
     *     } else {
     *         $error = $operationResponse->getError();
     *         // handleError($error)
     *     }
     *     // Alternatively:
     *     // start the operation, keep the operation name, and resume later
     *     $operationResponse = $disksClient->resize($disk, $disksResizeRequestResource, $project, $zone);
     *     $operationName = $operationResponse->getName();
     *     // ... do other work
     *     $newOperationResponse = $disksClient->resumeOperation($operationName, 'resize');
     *     while (!$newOperationResponse->isDone()) {
     *         // ... do other work
     *         $newOperationResponse->reload();
     *     }
     *     if ($newOperationResponse->operationSucceeded()) {
     *         // if creating/modifying, retrieve the target resource
     *     } else {
     *         $error = $newOperationResponse->getError();
     *         // handleError($error)
     *     }
     * } finally {
     *     $disksClient->close();
     * }
     * ```
     *
     * @param string             $disk                       The name of the persistent disk.
     * @param DisksResizeRequest $disksResizeRequestResource The body resource for this request
     * @param string             $project                    Project ID for this request.
     * @param string             $zone                       The name of the zone for this request.
     * @param array              $optionalArgs               {
     *     Optional.
     *
     *     @type string $requestId
     *           An optional request ID to identify requests. Specify a unique request ID so that if you must retry your request, the server will know to ignore the request if it has already been completed. For example, consider a situation where you make an initial request and the request times out. If you make the request again with the same request ID, the server can check if original operation with the same request ID was received, and if so, will ignore the second request. This prevents clients from accidentally creating duplicate commitments. The request ID must be a valid UUID with the exception that zero UUID is not supported ( 00000000-0000-0000-0000-000000000000).
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return \Google\ApiCore\OperationResponse
     *
     * @throws ApiException if the remote call fails
     */
    public function resize($disk, $disksResizeRequestResource, $project, $zone, array $optionalArgs = [])
    {
        $request = new ResizeDiskRequest();
        $requestParamHeaders = [];
        $request->setDisk($disk);
        $request->setDisksResizeRequestResource($disksResizeRequestResource);
        $request->setProject($project);
        $request->setZone($zone);
        $requestParamHeaders['disk'] = $disk;
        $requestParamHeaders['project'] = $project;
        $requestParamHeaders['zone'] = $zone;
        if (isset($optionalArgs['requestId'])) {
            $request->setRequestId($optionalArgs['requestId']);
        }

        $requestParams = new RequestParamsHeaderDescriptor($requestParamHeaders);
        $optionalArgs['headers'] = isset($optionalArgs['headers']) ? array_merge($requestParams->getHeader(), $optionalArgs['headers']) : $requestParams->getHeader();
        return $this->startOperationsCall('Resize', $optionalArgs, $request, $this->getOperationsClient(), null, Operation::class)->wait();
    }

    /**
     * Sets the access control policy on the specified resource. Replaces any existing policy.
     *
     * Sample code:
     * ```
     * $disksClient = new DisksClient();
     * try {
     *     $project = 'project';
     *     $resource = 'resource';
     *     $zone = 'zone';
     *     $zoneSetPolicyRequestResource = new ZoneSetPolicyRequest();
     *     $response = $disksClient->setIamPolicy($project, $resource, $zone, $zoneSetPolicyRequestResource);
     * } finally {
     *     $disksClient->close();
     * }
     * ```
     *
     * @param string               $project                      Project ID for this request.
     * @param string               $resource                     Name or id of the resource for this request.
     * @param string               $zone                         The name of the zone for this request.
     * @param ZoneSetPolicyRequest $zoneSetPolicyRequestResource The body resource for this request
     * @param array                $optionalArgs                 {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return \Google\Cloud\Compute\V1\Policy
     *
     * @throws ApiException if the remote call fails
     */
    public function setIamPolicy($project, $resource, $zone, $zoneSetPolicyRequestResource, array $optionalArgs = [])
    {
        $request = new SetIamPolicyDiskRequest();
        $requestParamHeaders = [];
        $request->setProject($project);
        $request->setResource($resource);
        $request->setZone($zone);
        $request->setZoneSetPolicyRequestResource($zoneSetPolicyRequestResource);
        $requestParamHeaders['project'] = $project;
        $requestParamHeaders['resource'] = $resource;
        $requestParamHeaders['zone'] = $zone;
        $requestParams = new RequestParamsHeaderDescriptor($requestParamHeaders);
        $optionalArgs['headers'] = isset($optionalArgs['headers']) ? array_merge($requestParams->getHeader(), $optionalArgs['headers']) : $requestParams->getHeader();
        return $this->startCall('SetIamPolicy', Policy::class, $optionalArgs, $request)->wait();
    }

    /**
     * Sets the labels on a disk. To learn more about labels, read the Labeling Resources documentation.
     *
     * Sample code:
     * ```
     * $disksClient = new DisksClient();
     * try {
     *     $project = 'project';
     *     $resource = 'resource';
     *     $zone = 'zone';
     *     $zoneSetLabelsRequestResource = new ZoneSetLabelsRequest();
     *     $operationResponse = $disksClient->setLabels($project, $resource, $zone, $zoneSetLabelsRequestResource);
     *     $operationResponse->pollUntilComplete();
     *     if ($operationResponse->operationSucceeded()) {
     *         // if creating/modifying, retrieve the target resource
     *     } else {
     *         $error = $operationResponse->getError();
     *         // handleError($error)
     *     }
     *     // Alternatively:
     *     // start the operation, keep the operation name, and resume later
     *     $operationResponse = $disksClient->setLabels($project, $resource, $zone, $zoneSetLabelsRequestResource);
     *     $operationName = $operationResponse->getName();
     *     // ... do other work
     *     $newOperationResponse = $disksClient->resumeOperation($operationName, 'setLabels');
     *     while (!$newOperationResponse->isDone()) {
     *         // ... do other work
     *         $newOperationResponse->reload();
     *     }
     *     if ($newOperationResponse->operationSucceeded()) {
     *         // if creating/modifying, retrieve the target resource
     *     } else {
     *         $error = $newOperationResponse->getError();
     *         // handleError($error)
     *     }
     * } finally {
     *     $disksClient->close();
     * }
     * ```
     *
     * @param string               $project                      Project ID for this request.
     * @param string               $resource                     Name or id of the resource for this request.
     * @param string               $zone                         The name of the zone for this request.
     * @param ZoneSetLabelsRequest $zoneSetLabelsRequestResource The body resource for this request
     * @param array                $optionalArgs                 {
     *     Optional.
     *
     *     @type string $requestId
     *           An optional request ID to identify requests. Specify a unique request ID so that if you must retry your request, the server will know to ignore the request if it has already been completed. For example, consider a situation where you make an initial request and the request times out. If you make the request again with the same request ID, the server can check if original operation with the same request ID was received, and if so, will ignore the second request. This prevents clients from accidentally creating duplicate commitments. The request ID must be a valid UUID with the exception that zero UUID is not supported ( 00000000-0000-0000-0000-000000000000).
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return \Google\ApiCore\OperationResponse
     *
     * @throws ApiException if the remote call fails
     */
    public function setLabels($project, $resource, $zone, $zoneSetLabelsRequestResource, array $optionalArgs = [])
    {
        $request = new SetLabelsDiskRequest();
        $requestParamHeaders = [];
        $request->setProject($project);
        $request->setResource($resource);
        $request->setZone($zone);
        $request->setZoneSetLabelsRequestResource($zoneSetLabelsRequestResource);
        $requestParamHeaders['project'] = $project;
        $requestParamHeaders['resource'] = $resource;
        $requestParamHeaders['zone'] = $zone;
        if (isset($optionalArgs['requestId'])) {
            $request->setRequestId($optionalArgs['requestId']);
        }

        $requestParams = new RequestParamsHeaderDescriptor($requestParamHeaders);
        $optionalArgs['headers'] = isset($optionalArgs['headers']) ? array_merge($requestParams->getHeader(), $optionalArgs['headers']) : $requestParams->getHeader();
        return $this->startOperationsCall('SetLabels', $optionalArgs, $request, $this->getOperationsClient(), null, Operation::class)->wait();
    }

    /**
     * Returns permissions that a caller has on the specified resource.
     *
     * Sample code:
     * ```
     * $disksClient = new DisksClient();
     * try {
     *     $project = 'project';
     *     $resource = 'resource';
     *     $testPermissionsRequestResource = new TestPermissionsRequest();
     *     $zone = 'zone';
     *     $response = $disksClient->testIamPermissions($project, $resource, $testPermissionsRequestResource, $zone);
     * } finally {
     *     $disksClient->close();
     * }
     * ```
     *
     * @param string                 $project                        Project ID for this request.
     * @param string                 $resource                       Name or id of the resource for this request.
     * @param TestPermissionsRequest $testPermissionsRequestResource The body resource for this request
     * @param string                 $zone                           The name of the zone for this request.
     * @param array                  $optionalArgs                   {
     *     Optional.
     *
     *     @type RetrySettings|array $retrySettings
     *           Retry settings to use for this call. Can be a {@see RetrySettings} object, or an
     *           associative array of retry settings parameters. See the documentation on
     *           {@see RetrySettings} for example usage.
     * }
     *
     * @return \Google\Cloud\Compute\V1\TestPermissionsResponse
     *
     * @throws ApiException if the remote call fails
     */
    public function testIamPermissions($project, $resource, $testPermissionsRequestResource, $zone, array $optionalArgs = [])
    {
        $request = new TestIamPermissionsDiskRequest();
        $requestParamHeaders = [];
        $request->setProject($project);
        $request->setResource($resource);
        $request->setTestPermissionsRequestResource($testPermissionsRequestResource);
        $request->setZone($zone);
        $requestParamHeaders['project'] = $project;
        $requestParamHeaders['resource'] = $resource;
        $requestParamHeaders['zone'] = $zone;
        $requestParams = new RequestParamsHeaderDescriptor($requestParamHeaders);
        $optionalArgs['headers'] = isset($optionalArgs['headers']) ? array_merge($requestParams->getHeader(), $optionalArgs['headers']) : $requestParams->getHeader();
        return $this->startCall('TestIamPermissions', TestPermissionsResponse::class, $optionalArgs, $request)->wait();
    }
}
