<?php
/*
 * Copyright 2024 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/billing/v1/cloud_billing.proto
 * Updates to the above are reflected here through a refresh process.
 */

namespace Google\Cloud\Billing\V1\Client;

use Google\ApiCore\ApiException;
use Google\ApiCore\CredentialsWrapper;
use Google\ApiCore\GapicClientTrait;
use Google\ApiCore\Options\ClientOptions;
use Google\ApiCore\PagedListResponse;
use Google\ApiCore\ResourceHelperTrait;
use Google\ApiCore\RetrySettings;
use Google\ApiCore\Transport\TransportInterface;
use Google\ApiCore\ValidationException;
use Google\Auth\FetchAuthTokenInterface;
use Google\Cloud\Billing\V1\BillingAccount;
use Google\Cloud\Billing\V1\CreateBillingAccountRequest;
use Google\Cloud\Billing\V1\GetBillingAccountRequest;
use Google\Cloud\Billing\V1\GetProjectBillingInfoRequest;
use Google\Cloud\Billing\V1\ListBillingAccountsRequest;
use Google\Cloud\Billing\V1\ListProjectBillingInfoRequest;
use Google\Cloud\Billing\V1\MoveBillingAccountRequest;
use Google\Cloud\Billing\V1\ProjectBillingInfo;
use Google\Cloud\Billing\V1\UpdateBillingAccountRequest;
use Google\Cloud\Billing\V1\UpdateProjectBillingInfoRequest;
use Google\Cloud\Iam\V1\GetIamPolicyRequest;
use Google\Cloud\Iam\V1\Policy;
use Google\Cloud\Iam\V1\SetIamPolicyRequest;
use Google\Cloud\Iam\V1\TestIamPermissionsRequest;
use Google\Cloud\Iam\V1\TestIamPermissionsResponse;
use GuzzleHttp\Promise\PromiseInterface;
use Psr\Log\LoggerInterface;

/**
 * Service Description: Retrieves the Google Cloud Console billing accounts and associates them with
 * projects.
 *
 * This class provides the ability to make remote calls to the backing service through method
 * calls that map to API methods.
 *
 * Many parameters require resource names to be formatted in a particular way. To
 * assist with these names, this class includes a format method for each type of
 * name, and additionally a parseName method to extract the individual identifiers
 * contained within formatted names that are returned by the API.
 *
 * @method PromiseInterface<BillingAccount> createBillingAccountAsync(CreateBillingAccountRequest $request, array $optionalArgs = [])
 * @method PromiseInterface<BillingAccount> getBillingAccountAsync(GetBillingAccountRequest $request, array $optionalArgs = [])
 * @method PromiseInterface<Policy> getIamPolicyAsync(GetIamPolicyRequest $request, array $optionalArgs = [])
 * @method PromiseInterface<ProjectBillingInfo> getProjectBillingInfoAsync(GetProjectBillingInfoRequest $request, array $optionalArgs = [])
 * @method PromiseInterface<PagedListResponse> listBillingAccountsAsync(ListBillingAccountsRequest $request, array $optionalArgs = [])
 * @method PromiseInterface<PagedListResponse> listProjectBillingInfoAsync(ListProjectBillingInfoRequest $request, array $optionalArgs = [])
 * @method PromiseInterface<BillingAccount> moveBillingAccountAsync(MoveBillingAccountRequest $request, array $optionalArgs = [])
 * @method PromiseInterface<Policy> setIamPolicyAsync(SetIamPolicyRequest $request, array $optionalArgs = [])
 * @method PromiseInterface<TestIamPermissionsResponse> testIamPermissionsAsync(TestIamPermissionsRequest $request, array $optionalArgs = [])
 * @method PromiseInterface<BillingAccount> updateBillingAccountAsync(UpdateBillingAccountRequest $request, array $optionalArgs = [])
 * @method PromiseInterface<ProjectBillingInfo> updateProjectBillingInfoAsync(UpdateProjectBillingInfoRequest $request, array $optionalArgs = [])
 */
final class CloudBillingClient
{
    use GapicClientTrait;
    use ResourceHelperTrait;

    /** The name of the service. */
    private const SERVICE_NAME = 'google.cloud.billing.v1.CloudBilling';

    /**
     * The default address of the service.
     *
     * @deprecated SERVICE_ADDRESS_TEMPLATE should be used instead.
     */
    private const SERVICE_ADDRESS = 'cloudbilling.googleapis.com';

    /** The address template of the service. */
    private const SERVICE_ADDRESS_TEMPLATE = 'cloudbilling.UNIVERSE_DOMAIN';

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

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

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

    private static function getClientDefaults()
    {
        return [
            'serviceName' => self::SERVICE_NAME,
            'apiEndpoint' => self::SERVICE_ADDRESS . ':' . self::DEFAULT_SERVICE_PORT,
            'clientConfig' => __DIR__ . '/../resources/cloud_billing_client_config.json',
            'descriptorsConfigPath' => __DIR__ . '/../resources/cloud_billing_descriptor_config.php',
            'gcpApiConfigPath' => __DIR__ . '/../resources/cloud_billing_grpc_config.json',
            'credentialsConfig' => [
                'defaultScopes' => self::$serviceScopes,
            ],
            'transportConfig' => [
                'rest' => [
                    'restClientConfigPath' => __DIR__ . '/../resources/cloud_billing_rest_client_config.php',
                ],
            ],
        ];
    }

    /**
     * Formats a string containing the fully-qualified path to represent a
     * billing_account resource.
     *
     * @param string $billingAccount
     *
     * @return string The formatted billing_account resource.
     */
    public static function billingAccountName(string $billingAccount): string
    {
        return self::getPathTemplate('billingAccount')->render([
            'billing_account' => $billingAccount,
        ]);
    }

    /**
     * Formats a string containing the fully-qualified path to represent a organization
     * resource.
     *
     * @param string $organization
     *
     * @return string The formatted organization resource.
     */
    public static function organizationName(string $organization): string
    {
        return self::getPathTemplate('organization')->render([
            'organization' => $organization,
        ]);
    }

    /**
     * Formats a string containing the fully-qualified path to represent a
     * organization_billing_account resource.
     *
     * @param string $organization
     * @param string $billingAccount
     *
     * @return string The formatted organization_billing_account resource.
     */
    public static function organizationBillingAccountName(string $organization, string $billingAccount): string
    {
        return self::getPathTemplate('organizationBillingAccount')->render([
            'organization' => $organization,
            'billing_account' => $billingAccount,
        ]);
    }

    /**
     * Formats a string containing the fully-qualified path to represent a project
     * resource.
     *
     * @param string $project
     *
     * @return string The formatted project resource.
     */
    public static function projectName(string $project): string
    {
        return self::getPathTemplate('project')->render([
            'project' => $project,
        ]);
    }

    /**
     * Formats a string containing the fully-qualified path to represent a
     * project_billing_info resource.
     *
     * @param string $project
     *
     * @return string The formatted project_billing_info resource.
     */
    public static function projectBillingInfoName(string $project): string
    {
        return self::getPathTemplate('projectBillingInfo')->render([
            'project' => $project,
        ]);
    }

    /**
     * Parses a formatted name string and returns an associative array of the components in the name.
     * The following name formats are supported:
     * Template: Pattern
     * - billingAccount: billingAccounts/{billing_account}
     * - organization: organizations/{organization}
     * - organizationBillingAccount: organizations/{organization}/billingAccounts/{billing_account}
     * - project: projects/{project}
     * - projectBillingInfo: projects/{project}/billingInfo
     *
     * The optional $template argument can be supplied to specify a particular pattern,
     * and must match one of the templates listed above. If no $template argument is
     * provided, or if the $template argument does not match one of the templates
     * listed, then parseName will check each of the supported templates, and return
     * the first match.
     *
     * @param string  $formattedName The formatted name string
     * @param ?string $template      Optional name of template to match
     *
     * @return array An associative array from name component IDs to component values.
     *
     * @throws ValidationException If $formattedName could not be matched.
     */
    public static function parseName(string $formattedName, ?string $template = null): array
    {
        return self::parseFormattedName($formattedName, $template);
    }

    /**
     * Constructor.
     *
     * @param array|ClientOptions $options {
     *     Optional. Options for configuring the service API wrapper.
     *
     *     @type string $apiEndpoint
     *           The address of the API remote host. May optionally include the port, formatted
     *           as "<uri>:<port>". Default 'cloudbilling.googleapis.com:443'.
     *     @type FetchAuthTokenInterface|CredentialsWrapper $credentials
     *           This option should only be used with a pre-constructed
     *           {@see FetchAuthTokenInterface} or {@see CredentialsWrapper} object. Note that
     *           when one of these objects are provided, any settings in $credentialsConfig will
     *           be ignored.
     *           **Important**: If you are providing a path to a credentials file, or a decoded
     *           credentials file as a PHP array, this usage is now DEPRECATED. Providing an
     *           unvalidated credential configuration to Google APIs can compromise the security
     *           of your systems and data. It is recommended to create the credentials explicitly
     *           ```
     *           use Google\Auth\Credentials\ServiceAccountCredentials;
     *           use Google\Cloud\Billing\V1\CloudBillingClient;
     *           $creds = new ServiceAccountCredentials($scopes, $json);
     *           $options = new CloudBillingClient(['credentials' => $creds]);
     *           ```
     *           {@see
     *           https://cloud.google.com/docs/authentication/external/externally-sourced-credentials}
     *     @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. May be either the string
     *           `rest` or `grpc`. Defaults to `grpc` if gRPC support is detected on the system.
     *           *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
     *           $apiEndpoint 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 = [
     *               'grpc' => [...],
     *               'rest' => [...],
     *           ];
     *           See the {@see \Google\ApiCore\Transport\GrpcTransport::build()} and
     *           {@see \Google\ApiCore\Transport\RestTransport::build()} methods 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.
     *     @type false|LoggerInterface $logger
     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
     *     @type string $universeDomain
     *           The service domain for the client. Defaults to 'googleapis.com'.
     * }
     *
     * @throws ValidationException
     */
    public function __construct(array|ClientOptions $options = [])
    {
        $clientOptions = $this->buildClientOptions($options);
        $this->setClientOptions($clientOptions);
    }

    /** Handles execution of the async variants for each documented method. */
    public function __call($method, $args)
    {
        if (substr($method, -5) !== 'Async') {
            trigger_error('Call to undefined method ' . __CLASS__ . "::$method()", E_USER_ERROR);
        }

        array_unshift($args, substr($method, 0, -5));
        return call_user_func_array([$this, 'startAsyncCall'], $args);
    }

    /**
     * This method creates [billing
     * subaccounts](https://cloud.google.com/billing/docs/concepts#subaccounts).
     *
     * Google Cloud resellers should use the
     * Channel Services APIs,
     * [accounts.customers.create](https://cloud.google.com/channel/docs/reference/rest/v1/accounts.customers/create)
     * and
     * [accounts.customers.entitlements.create](https://cloud.google.com/channel/docs/reference/rest/v1/accounts.customers.entitlements/create).
     *
     * When creating a subaccount, the current authenticated user must have the
     * `billing.accounts.update` IAM permission on the parent account, which is
     * typically given to billing account
     * [administrators](https://cloud.google.com/billing/docs/how-to/billing-access).
     * This method will return an error if the parent account has not been
     * provisioned for subaccounts.
     *
     * The async variant is {@see CloudBillingClient::createBillingAccountAsync()} .
     *
     * @example samples/V1/CloudBillingClient/create_billing_account.php
     *
     * @param CreateBillingAccountRequest $request     A request to house fields associated with the call.
     * @param array                       $callOptions {
     *     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 BillingAccount
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function createBillingAccount(CreateBillingAccountRequest $request, array $callOptions = []): BillingAccount
    {
        return $this->startApiCall('CreateBillingAccount', $request, $callOptions)->wait();
    }

    /**
     * Gets information about a billing account. The current authenticated user
     * must be a [viewer of the billing
     * account](https://cloud.google.com/billing/docs/how-to/billing-access).
     *
     * The async variant is {@see CloudBillingClient::getBillingAccountAsync()} .
     *
     * @example samples/V1/CloudBillingClient/get_billing_account.php
     *
     * @param GetBillingAccountRequest $request     A request to house fields associated with the call.
     * @param array                    $callOptions {
     *     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 BillingAccount
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function getBillingAccount(GetBillingAccountRequest $request, array $callOptions = []): BillingAccount
    {
        return $this->startApiCall('GetBillingAccount', $request, $callOptions)->wait();
    }

    /**
     * Gets the access control policy for a billing account.
     * The caller must have the `billing.accounts.getIamPolicy` permission on the
     * account, which is often given to billing account
     * [viewers](https://cloud.google.com/billing/docs/how-to/billing-access).
     *
     * The async variant is {@see CloudBillingClient::getIamPolicyAsync()} .
     *
     * @example samples/V1/CloudBillingClient/get_iam_policy.php
     *
     * @param GetIamPolicyRequest $request     A request to house fields associated with the call.
     * @param array               $callOptions {
     *     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 Policy
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function getIamPolicy(GetIamPolicyRequest $request, array $callOptions = []): Policy
    {
        return $this->startApiCall('GetIamPolicy', $request, $callOptions)->wait();
    }

    /**
     * Gets the billing information for a project. The current authenticated user
     * must have the `resourcemanager.projects.get` permission for the project,
     * which can be granted by assigning the [Project
     * Viewer](https://cloud.google.com/iam/docs/understanding-roles#predefined_roles)
     * role.
     *
     * The async variant is {@see CloudBillingClient::getProjectBillingInfoAsync()} .
     *
     * @example samples/V1/CloudBillingClient/get_project_billing_info.php
     *
     * @param GetProjectBillingInfoRequest $request     A request to house fields associated with the call.
     * @param array                        $callOptions {
     *     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 ProjectBillingInfo
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function getProjectBillingInfo(
        GetProjectBillingInfoRequest $request,
        array $callOptions = []
    ): ProjectBillingInfo {
        return $this->startApiCall('GetProjectBillingInfo', $request, $callOptions)->wait();
    }

    /**
     * Lists the billing accounts that the current authenticated user has
     * permission to
     * [view](https://cloud.google.com/billing/docs/how-to/billing-access).
     *
     * The async variant is {@see CloudBillingClient::listBillingAccountsAsync()} .
     *
     * @example samples/V1/CloudBillingClient/list_billing_accounts.php
     *
     * @param ListBillingAccountsRequest $request     A request to house fields associated with the call.
     * @param array                      $callOptions {
     *     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 PagedListResponse
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function listBillingAccounts(ListBillingAccountsRequest $request, array $callOptions = []): PagedListResponse
    {
        return $this->startApiCall('ListBillingAccounts', $request, $callOptions);
    }

    /**
     * Lists the projects associated with a billing account. The current
     * authenticated user must have the `billing.resourceAssociations.list` IAM
     * permission, which is often given to billing account
     * [viewers](https://cloud.google.com/billing/docs/how-to/billing-access).
     *
     * The async variant is {@see CloudBillingClient::listProjectBillingInfoAsync()} .
     *
     * @example samples/V1/CloudBillingClient/list_project_billing_info.php
     *
     * @param ListProjectBillingInfoRequest $request     A request to house fields associated with the call.
     * @param array                         $callOptions {
     *     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 PagedListResponse
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function listProjectBillingInfo(
        ListProjectBillingInfoRequest $request,
        array $callOptions = []
    ): PagedListResponse {
        return $this->startApiCall('ListProjectBillingInfo', $request, $callOptions);
    }

    /**
     * Changes which parent organization a billing account belongs to.
     *
     * The async variant is {@see CloudBillingClient::moveBillingAccountAsync()} .
     *
     * @example samples/V1/CloudBillingClient/move_billing_account.php
     *
     * @param MoveBillingAccountRequest $request     A request to house fields associated with the call.
     * @param array                     $callOptions {
     *     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 BillingAccount
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function moveBillingAccount(MoveBillingAccountRequest $request, array $callOptions = []): BillingAccount
    {
        return $this->startApiCall('MoveBillingAccount', $request, $callOptions)->wait();
    }

    /**
     * Sets the access control policy for a billing account. Replaces any existing
     * policy.
     * The caller must have the `billing.accounts.setIamPolicy` permission on the
     * account, which is often given to billing account
     * [administrators](https://cloud.google.com/billing/docs/how-to/billing-access).
     *
     * The async variant is {@see CloudBillingClient::setIamPolicyAsync()} .
     *
     * @example samples/V1/CloudBillingClient/set_iam_policy.php
     *
     * @param SetIamPolicyRequest $request     A request to house fields associated with the call.
     * @param array               $callOptions {
     *     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 Policy
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function setIamPolicy(SetIamPolicyRequest $request, array $callOptions = []): Policy
    {
        return $this->startApiCall('SetIamPolicy', $request, $callOptions)->wait();
    }

    /**
     * Tests the access control policy for a billing account. This method takes
     * the resource and a set of permissions as input and returns the subset of
     * the input permissions that the caller is allowed for that resource.
     *
     * The async variant is {@see CloudBillingClient::testIamPermissionsAsync()} .
     *
     * @example samples/V1/CloudBillingClient/test_iam_permissions.php
     *
     * @param TestIamPermissionsRequest $request     A request to house fields associated with the call.
     * @param array                     $callOptions {
     *     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 TestIamPermissionsResponse
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function testIamPermissions(
        TestIamPermissionsRequest $request,
        array $callOptions = []
    ): TestIamPermissionsResponse {
        return $this->startApiCall('TestIamPermissions', $request, $callOptions)->wait();
    }

    /**
     * Updates a billing account's fields.
     * Currently the only field that can be edited is `display_name`.
     * The current authenticated user must have the `billing.accounts.update`
     * IAM permission, which is typically given to the
     * [administrator](https://cloud.google.com/billing/docs/how-to/billing-access)
     * of the billing account.
     *
     * The async variant is {@see CloudBillingClient::updateBillingAccountAsync()} .
     *
     * @example samples/V1/CloudBillingClient/update_billing_account.php
     *
     * @param UpdateBillingAccountRequest $request     A request to house fields associated with the call.
     * @param array                       $callOptions {
     *     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 BillingAccount
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function updateBillingAccount(UpdateBillingAccountRequest $request, array $callOptions = []): BillingAccount
    {
        return $this->startApiCall('UpdateBillingAccount', $request, $callOptions)->wait();
    }

    /**
     * Sets or updates the billing account associated with a project. You specify
     * the new billing account by setting the `billing_account_name` in the
     * `ProjectBillingInfo` resource to the resource name of a billing account.
     * Associating a project with an open billing account enables billing on the
     * project and allows charges for resource usage. If the project already had a
     * billing account, this method changes the billing account used for resource
     * usage charges.
     *
     * *Note:* Incurred charges that have not yet been reported in the transaction
     * history of the Google Cloud Console might be billed to the new billing
     * account, even if the charge occurred before the new billing account was
     * assigned to the project.
     *
     * The current authenticated user must have ownership privileges for both
     * the
     * [project](https://cloud.google.com/docs/permissions-overview#h.bgs0oxofvnoo
     * ) and the [billing
     * account](https://cloud.google.com/billing/docs/how-to/billing-access).
     *
     * You can disable billing on the project by setting the
     * `billing_account_name` field to empty. This action disassociates the
     * current billing account from the project. Any billable activity of your
     * in-use services will stop, and your application could stop functioning as
     * expected. Any unbilled charges to date will be billed to the previously
     * associated account. The current authenticated user must be either an owner
     * of the project or an owner of the billing account for the project.
     *
     * Note that associating a project with a *closed* billing account will have
     * much the same effect as disabling billing on the project: any paid
     * resources used by the project will be shut down. Thus, unless you wish to
     * disable billing, you should always call this method with the name of an
     * *open* billing account.
     *
     * The async variant is {@see CloudBillingClient::updateProjectBillingInfoAsync()}
     * .
     *
     * @example samples/V1/CloudBillingClient/update_project_billing_info.php
     *
     * @param UpdateProjectBillingInfoRequest $request     A request to house fields associated with the call.
     * @param array                           $callOptions {
     *     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 ProjectBillingInfo
     *
     * @throws ApiException Thrown if the API call fails.
     */
    public function updateProjectBillingInfo(
        UpdateProjectBillingInfoRequest $request,
        array $callOptions = []
    ): ProjectBillingInfo {
        return $this->startApiCall('UpdateProjectBillingInfo', $request, $callOptions)->wait();
    }
}
