# frozen_string_literal: true

# Copyright 2020 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.

# Auto-generated by gapic-generator-ruby. DO NOT EDIT!

require "google/cloud/errors"
require "google/cloud/billing/v1/cloud_billing_pb"

module Google
  module Cloud
    module Billing
      module V1
        module CloudBilling
          ##
          # Client for the CloudBilling service.
          #
          # Retrieves the Google Cloud Console billing accounts and associates them with
          # projects.
          #
          class Client
            # @private
            API_VERSION = ""

            # @private
            DEFAULT_ENDPOINT_TEMPLATE = "cloudbilling.$UNIVERSE_DOMAIN$"

            include Paths

            # @private
            attr_reader :cloud_billing_stub

            ##
            # Configure the CloudBilling Client class.
            #
            # See {::Google::Cloud::Billing::V1::CloudBilling::Client::Configuration}
            # for a description of the configuration fields.
            #
            # @example
            #
            #   # Modify the configuration for all CloudBilling clients
            #   ::Google::Cloud::Billing::V1::CloudBilling::Client.configure do |config|
            #     config.timeout = 10.0
            #   end
            #
            # @yield [config] Configure the Client client.
            # @yieldparam config [Client::Configuration]
            #
            # @return [Client::Configuration]
            #
            def self.configure
              @configure ||= begin
                namespace = ["Google", "Cloud", "Billing", "V1"]
                parent_config = while namespace.any?
                                  parent_name = namespace.join "::"
                                  parent_const = const_get parent_name
                                  break parent_const.configure if parent_const.respond_to? :configure
                                  namespace.pop
                                end
                default_config = Client::Configuration.new parent_config

                default_config.rpcs.get_billing_account.timeout = 60.0
                default_config.rpcs.get_billing_account.retry_policy = {
                  initial_delay: 0.1, max_delay: 60.0, multiplier: 1.3, retry_codes: [4, 14]
                }

                default_config.rpcs.list_billing_accounts.timeout = 60.0
                default_config.rpcs.list_billing_accounts.retry_policy = {
                  initial_delay: 0.1, max_delay: 60.0, multiplier: 1.3, retry_codes: [4, 14]
                }

                default_config.rpcs.update_billing_account.timeout = 60.0
                default_config.rpcs.update_billing_account.retry_policy = {
                  initial_delay: 0.1, max_delay: 60.0, multiplier: 1.3, retry_codes: [4, 14]
                }

                default_config.rpcs.create_billing_account.timeout = 60.0

                default_config.rpcs.list_project_billing_info.timeout = 60.0
                default_config.rpcs.list_project_billing_info.retry_policy = {
                  initial_delay: 0.1, max_delay: 60.0, multiplier: 1.3, retry_codes: [4, 14]
                }

                default_config.rpcs.get_project_billing_info.timeout = 60.0
                default_config.rpcs.get_project_billing_info.retry_policy = {
                  initial_delay: 0.1, max_delay: 60.0, multiplier: 1.3, retry_codes: [4, 14]
                }

                default_config.rpcs.update_project_billing_info.timeout = 60.0
                default_config.rpcs.update_project_billing_info.retry_policy = {
                  initial_delay: 0.1, max_delay: 60.0, multiplier: 1.3, retry_codes: [4, 14]
                }

                default_config.rpcs.get_iam_policy.timeout = 60.0
                default_config.rpcs.get_iam_policy.retry_policy = {
                  initial_delay: 0.1, max_delay: 60.0, multiplier: 1.3, retry_codes: [4, 14]
                }

                default_config.rpcs.set_iam_policy.timeout = 60.0
                default_config.rpcs.set_iam_policy.retry_policy = {
                  initial_delay: 0.1, max_delay: 60.0, multiplier: 1.3, retry_codes: [4, 14]
                }

                default_config.rpcs.test_iam_permissions.timeout = 60.0
                default_config.rpcs.test_iam_permissions.retry_policy = {
                  initial_delay: 0.1, max_delay: 60.0, multiplier: 1.3, retry_codes: [4, 14]
                }

                default_config
              end
              yield @configure if block_given?
              @configure
            end

            ##
            # Configure the CloudBilling Client instance.
            #
            # The configuration is set to the derived mode, meaning that values can be changed,
            # but structural changes (adding new fields, etc.) are not allowed. Structural changes
            # should be made on {Client.configure}.
            #
            # See {::Google::Cloud::Billing::V1::CloudBilling::Client::Configuration}
            # for a description of the configuration fields.
            #
            # @yield [config] Configure the Client client.
            # @yieldparam config [Client::Configuration]
            #
            # @return [Client::Configuration]
            #
            def configure
              yield @config if block_given?
              @config
            end

            ##
            # The effective universe domain
            #
            # @return [String]
            #
            def universe_domain
              @cloud_billing_stub.universe_domain
            end

            ##
            # Create a new CloudBilling client object.
            #
            # @example
            #
            #   # Create a client using the default configuration
            #   client = ::Google::Cloud::Billing::V1::CloudBilling::Client.new
            #
            #   # Create a client using a custom configuration
            #   client = ::Google::Cloud::Billing::V1::CloudBilling::Client.new do |config|
            #     config.timeout = 10.0
            #   end
            #
            # @yield [config] Configure the CloudBilling client.
            # @yieldparam config [Client::Configuration]
            #
            def initialize
              # These require statements are intentionally placed here to initialize
              # the gRPC module only when it's required.
              # See https://github.com/googleapis/toolkit/issues/446
              require "gapic/grpc"
              require "google/cloud/billing/v1/cloud_billing_services_pb"

              # Create the configuration object
              @config = Configuration.new Client.configure

              # Yield the configuration if needed
              yield @config if block_given?

              # Create credentials
              credentials = @config.credentials
              # Use self-signed JWT if the endpoint is unchanged from default,
              # but only if the default endpoint does not have a region prefix.
              enable_self_signed_jwt = @config.endpoint.nil? ||
                                       (@config.endpoint == Configuration::DEFAULT_ENDPOINT &&
                                       !@config.endpoint.split(".").first.include?("-"))
              credentials ||= Credentials.default scope: @config.scope,
                                                  enable_self_signed_jwt: enable_self_signed_jwt
              if credentials.is_a?(::String) || credentials.is_a?(::Hash)
                credentials = Credentials.new credentials, scope: @config.scope
              end
              @quota_project_id = @config.quota_project
              @quota_project_id ||= credentials.quota_project_id if credentials.respond_to? :quota_project_id

              @cloud_billing_stub = ::Gapic::ServiceStub.new(
                ::Google::Cloud::Billing::V1::CloudBilling::Stub,
                credentials: credentials,
                endpoint: @config.endpoint,
                endpoint_template: DEFAULT_ENDPOINT_TEMPLATE,
                universe_domain: @config.universe_domain,
                channel_args: @config.channel_args,
                interceptors: @config.interceptors,
                channel_pool_config: @config.channel_pool,
                logger: @config.logger
              )

              @cloud_billing_stub.stub_logger&.info do |entry|
                entry.set_system_name
                entry.set_service
                entry.message = "Created client for #{entry.service}"
                entry.set_credentials_fields credentials
                entry.set "customEndpoint", @config.endpoint if @config.endpoint
                entry.set "defaultTimeout", @config.timeout if @config.timeout
                entry.set "quotaProject", @quota_project_id if @quota_project_id
              end
            end

            ##
            # The logger used for request/response debug logging.
            #
            # @return [Logger]
            #
            def logger
              @cloud_billing_stub.logger
            end

            # Service calls

            ##
            # 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).
            #
            # @overload get_billing_account(request, options = nil)
            #   Pass arguments to `get_billing_account` via a request object, either of type
            #   {::Google::Cloud::Billing::V1::GetBillingAccountRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::Billing::V1::GetBillingAccountRequest, ::Hash]
            #     A request object representing the call parameters. Required. To specify no
            #     parameters, or to keep all the default parameter values, pass an empty Hash.
            #   @param options [::Gapic::CallOptions, ::Hash]
            #     Overrides the default settings for this call, e.g, timeout, retries, etc. Optional.
            #
            # @overload get_billing_account(name: nil)
            #   Pass arguments to `get_billing_account` via keyword arguments. Note that at
            #   least one keyword argument is required. To specify no parameters, or to keep all
            #   the default parameter values, pass an empty Hash as a request object (see above).
            #
            #   @param name [::String]
            #     Required. The resource name of the billing account to retrieve. For
            #     example, `billingAccounts/012345-567890-ABCDEF`.
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Cloud::Billing::V1::BillingAccount]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Cloud::Billing::V1::BillingAccount]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/billing/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::Billing::V1::CloudBilling::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::Billing::V1::GetBillingAccountRequest.new
            #
            #   # Call the get_billing_account method.
            #   result = client.get_billing_account request
            #
            #   # The returned object is of type Google::Cloud::Billing::V1::BillingAccount.
            #   p result
            #
            def get_billing_account request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::Billing::V1::GetBillingAccountRequest

              # Converts hash and nil to an options object
              options = ::Gapic::CallOptions.new(**options.to_h) if options.respond_to? :to_h

              # Customize the options with defaults
              metadata = @config.rpcs.get_billing_account.metadata.to_h

              # Set x-goog-api-client, x-goog-user-project and x-goog-api-version headers
              metadata[:"x-goog-api-client"] ||= ::Gapic::Headers.x_goog_api_client \
                lib_name: @config.lib_name, lib_version: @config.lib_version,
                gapic_version: ::Google::Cloud::Billing::V1::VERSION
              metadata[:"x-goog-api-version"] = API_VERSION unless API_VERSION.empty?
              metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id

              header_params = {}
              if request.name
                header_params["name"] = request.name
              end

              request_params_header = header_params.map { |k, v| "#{k}=#{v}" }.join("&")
              metadata[:"x-goog-request-params"] ||= request_params_header

              options.apply_defaults timeout:      @config.rpcs.get_billing_account.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.get_billing_account.retry_policy

              options.apply_defaults timeout:      @config.timeout,
                                     metadata:     @config.metadata,
                                     retry_policy: @config.retry_policy

              @cloud_billing_stub.call_rpc :get_billing_account, request, options: options do |response, operation|
                yield response, operation if block_given?
              end
            rescue ::GRPC::BadStatus => e
              raise ::Google::Cloud::Error.from_error(e)
            end

            ##
            # Lists the billing accounts that the current authenticated user has
            # permission to
            # [view](https://cloud.google.com/billing/docs/how-to/billing-access).
            #
            # @overload list_billing_accounts(request, options = nil)
            #   Pass arguments to `list_billing_accounts` via a request object, either of type
            #   {::Google::Cloud::Billing::V1::ListBillingAccountsRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::Billing::V1::ListBillingAccountsRequest, ::Hash]
            #     A request object representing the call parameters. Required. To specify no
            #     parameters, or to keep all the default parameter values, pass an empty Hash.
            #   @param options [::Gapic::CallOptions, ::Hash]
            #     Overrides the default settings for this call, e.g, timeout, retries, etc. Optional.
            #
            # @overload list_billing_accounts(page_size: nil, page_token: nil, filter: nil, parent: nil)
            #   Pass arguments to `list_billing_accounts` via keyword arguments. Note that at
            #   least one keyword argument is required. To specify no parameters, or to keep all
            #   the default parameter values, pass an empty Hash as a request object (see above).
            #
            #   @param page_size [::Integer]
            #     Requested page size. The maximum page size is 100; this is also the
            #     default.
            #   @param page_token [::String]
            #     A token identifying a page of results to return. This should be a
            #     `next_page_token` value returned from a previous `ListBillingAccounts`
            #     call. If unspecified, the first page of results is returned.
            #   @param filter [::String]
            #     Options for how to filter the returned billing accounts.
            #     This only supports filtering for
            #     [subaccounts](https://cloud.google.com/billing/docs/concepts) under a
            #     single provided parent billing account.
            #     (for example,
            #     `master_billing_account=billingAccounts/012345-678901-ABCDEF`).
            #     Boolean algebra and other fields are not currently supported.
            #   @param parent [::String]
            #     Optional. The parent resource to list billing accounts from.
            #     Format:
            #       - `organizations/{organization_id}`, for example,
            #         `organizations/12345678`
            #       - `billingAccounts/{billing_account_id}`, for example,
            #         `billingAccounts/012345-567890-ABCDEF`
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Gapic::PagedEnumerable<::Google::Cloud::Billing::V1::BillingAccount>]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Gapic::PagedEnumerable<::Google::Cloud::Billing::V1::BillingAccount>]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/billing/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::Billing::V1::CloudBilling::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::Billing::V1::ListBillingAccountsRequest.new
            #
            #   # Call the list_billing_accounts method.
            #   result = client.list_billing_accounts request
            #
            #   # The returned object is of type Gapic::PagedEnumerable. You can iterate
            #   # over elements, and API calls will be issued to fetch pages as needed.
            #   result.each do |item|
            #     # Each element is of type ::Google::Cloud::Billing::V1::BillingAccount.
            #     p item
            #   end
            #
            def list_billing_accounts request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::Billing::V1::ListBillingAccountsRequest

              # Converts hash and nil to an options object
              options = ::Gapic::CallOptions.new(**options.to_h) if options.respond_to? :to_h

              # Customize the options with defaults
              metadata = @config.rpcs.list_billing_accounts.metadata.to_h

              # Set x-goog-api-client, x-goog-user-project and x-goog-api-version headers
              metadata[:"x-goog-api-client"] ||= ::Gapic::Headers.x_goog_api_client \
                lib_name: @config.lib_name, lib_version: @config.lib_version,
                gapic_version: ::Google::Cloud::Billing::V1::VERSION
              metadata[:"x-goog-api-version"] = API_VERSION unless API_VERSION.empty?
              metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id

              options.apply_defaults timeout:      @config.rpcs.list_billing_accounts.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.list_billing_accounts.retry_policy

              options.apply_defaults timeout:      @config.timeout,
                                     metadata:     @config.metadata,
                                     retry_policy: @config.retry_policy

              @cloud_billing_stub.call_rpc :list_billing_accounts, request, options: options do |response, operation|
                response = ::Gapic::PagedEnumerable.new @cloud_billing_stub, :list_billing_accounts, request, response, operation, options
                yield response, operation if block_given?
                throw :response, response
              end
            rescue ::GRPC::BadStatus => e
              raise ::Google::Cloud::Error.from_error(e)
            end

            ##
            # 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.
            #
            # @overload update_billing_account(request, options = nil)
            #   Pass arguments to `update_billing_account` via a request object, either of type
            #   {::Google::Cloud::Billing::V1::UpdateBillingAccountRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::Billing::V1::UpdateBillingAccountRequest, ::Hash]
            #     A request object representing the call parameters. Required. To specify no
            #     parameters, or to keep all the default parameter values, pass an empty Hash.
            #   @param options [::Gapic::CallOptions, ::Hash]
            #     Overrides the default settings for this call, e.g, timeout, retries, etc. Optional.
            #
            # @overload update_billing_account(name: nil, account: nil, update_mask: nil)
            #   Pass arguments to `update_billing_account` via keyword arguments. Note that at
            #   least one keyword argument is required. To specify no parameters, or to keep all
            #   the default parameter values, pass an empty Hash as a request object (see above).
            #
            #   @param name [::String]
            #     Required. The name of the billing account resource to be updated.
            #   @param account [::Google::Cloud::Billing::V1::BillingAccount, ::Hash]
            #     Required. The billing account resource to replace the resource on the
            #     server.
            #   @param update_mask [::Google::Protobuf::FieldMask, ::Hash]
            #     The update mask applied to the resource.
            #     Only "display_name" is currently supported.
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Cloud::Billing::V1::BillingAccount]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Cloud::Billing::V1::BillingAccount]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/billing/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::Billing::V1::CloudBilling::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::Billing::V1::UpdateBillingAccountRequest.new
            #
            #   # Call the update_billing_account method.
            #   result = client.update_billing_account request
            #
            #   # The returned object is of type Google::Cloud::Billing::V1::BillingAccount.
            #   p result
            #
            def update_billing_account request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::Billing::V1::UpdateBillingAccountRequest

              # Converts hash and nil to an options object
              options = ::Gapic::CallOptions.new(**options.to_h) if options.respond_to? :to_h

              # Customize the options with defaults
              metadata = @config.rpcs.update_billing_account.metadata.to_h

              # Set x-goog-api-client, x-goog-user-project and x-goog-api-version headers
              metadata[:"x-goog-api-client"] ||= ::Gapic::Headers.x_goog_api_client \
                lib_name: @config.lib_name, lib_version: @config.lib_version,
                gapic_version: ::Google::Cloud::Billing::V1::VERSION
              metadata[:"x-goog-api-version"] = API_VERSION unless API_VERSION.empty?
              metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id

              header_params = {}
              if request.name
                header_params["name"] = request.name
              end

              request_params_header = header_params.map { |k, v| "#{k}=#{v}" }.join("&")
              metadata[:"x-goog-request-params"] ||= request_params_header

              options.apply_defaults timeout:      @config.rpcs.update_billing_account.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.update_billing_account.retry_policy

              options.apply_defaults timeout:      @config.timeout,
                                     metadata:     @config.metadata,
                                     retry_policy: @config.retry_policy

              @cloud_billing_stub.call_rpc :update_billing_account, request, options: options do |response, operation|
                yield response, operation if block_given?
              end
            rescue ::GRPC::BadStatus => e
              raise ::Google::Cloud::Error.from_error(e)
            end

            ##
            # 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.
            #
            # @overload create_billing_account(request, options = nil)
            #   Pass arguments to `create_billing_account` via a request object, either of type
            #   {::Google::Cloud::Billing::V1::CreateBillingAccountRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::Billing::V1::CreateBillingAccountRequest, ::Hash]
            #     A request object representing the call parameters. Required. To specify no
            #     parameters, or to keep all the default parameter values, pass an empty Hash.
            #   @param options [::Gapic::CallOptions, ::Hash]
            #     Overrides the default settings for this call, e.g, timeout, retries, etc. Optional.
            #
            # @overload create_billing_account(billing_account: nil, parent: nil)
            #   Pass arguments to `create_billing_account` via keyword arguments. Note that at
            #   least one keyword argument is required. To specify no parameters, or to keep all
            #   the default parameter values, pass an empty Hash as a request object (see above).
            #
            #   @param billing_account [::Google::Cloud::Billing::V1::BillingAccount, ::Hash]
            #     Required. The billing account resource to create.
            #     Currently CreateBillingAccount only supports subaccount creation, so
            #     any created billing accounts must be under a provided parent billing
            #     account.
            #   @param parent [::String]
            #     Optional. The parent to create a billing account from.
            #     Format:
            #       - `billingAccounts/{billing_account_id}`, for example,
            #          `billingAccounts/012345-567890-ABCDEF`
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Cloud::Billing::V1::BillingAccount]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Cloud::Billing::V1::BillingAccount]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/billing/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::Billing::V1::CloudBilling::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::Billing::V1::CreateBillingAccountRequest.new
            #
            #   # Call the create_billing_account method.
            #   result = client.create_billing_account request
            #
            #   # The returned object is of type Google::Cloud::Billing::V1::BillingAccount.
            #   p result
            #
            def create_billing_account request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::Billing::V1::CreateBillingAccountRequest

              # Converts hash and nil to an options object
              options = ::Gapic::CallOptions.new(**options.to_h) if options.respond_to? :to_h

              # Customize the options with defaults
              metadata = @config.rpcs.create_billing_account.metadata.to_h

              # Set x-goog-api-client, x-goog-user-project and x-goog-api-version headers
              metadata[:"x-goog-api-client"] ||= ::Gapic::Headers.x_goog_api_client \
                lib_name: @config.lib_name, lib_version: @config.lib_version,
                gapic_version: ::Google::Cloud::Billing::V1::VERSION
              metadata[:"x-goog-api-version"] = API_VERSION unless API_VERSION.empty?
              metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id

              options.apply_defaults timeout:      @config.rpcs.create_billing_account.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.create_billing_account.retry_policy

              options.apply_defaults timeout:      @config.timeout,
                                     metadata:     @config.metadata,
                                     retry_policy: @config.retry_policy

              @cloud_billing_stub.call_rpc :create_billing_account, request, options: options do |response, operation|
                yield response, operation if block_given?
              end
            rescue ::GRPC::BadStatus => e
              raise ::Google::Cloud::Error.from_error(e)
            end

            ##
            # 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).
            #
            # @overload list_project_billing_info(request, options = nil)
            #   Pass arguments to `list_project_billing_info` via a request object, either of type
            #   {::Google::Cloud::Billing::V1::ListProjectBillingInfoRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::Billing::V1::ListProjectBillingInfoRequest, ::Hash]
            #     A request object representing the call parameters. Required. To specify no
            #     parameters, or to keep all the default parameter values, pass an empty Hash.
            #   @param options [::Gapic::CallOptions, ::Hash]
            #     Overrides the default settings for this call, e.g, timeout, retries, etc. Optional.
            #
            # @overload list_project_billing_info(name: nil, page_size: nil, page_token: nil)
            #   Pass arguments to `list_project_billing_info` via keyword arguments. Note that at
            #   least one keyword argument is required. To specify no parameters, or to keep all
            #   the default parameter values, pass an empty Hash as a request object (see above).
            #
            #   @param name [::String]
            #     Required. The resource name of the billing account associated with the
            #     projects that you want to list. For example,
            #     `billingAccounts/012345-567890-ABCDEF`.
            #   @param page_size [::Integer]
            #     Requested page size. The maximum page size is 100; this is also the
            #     default.
            #   @param page_token [::String]
            #     A token identifying a page of results to be returned. This should be a
            #     `next_page_token` value returned from a previous `ListProjectBillingInfo`
            #     call. If unspecified, the first page of results is returned.
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Gapic::PagedEnumerable<::Google::Cloud::Billing::V1::ProjectBillingInfo>]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Gapic::PagedEnumerable<::Google::Cloud::Billing::V1::ProjectBillingInfo>]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/billing/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::Billing::V1::CloudBilling::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::Billing::V1::ListProjectBillingInfoRequest.new
            #
            #   # Call the list_project_billing_info method.
            #   result = client.list_project_billing_info request
            #
            #   # The returned object is of type Gapic::PagedEnumerable. You can iterate
            #   # over elements, and API calls will be issued to fetch pages as needed.
            #   result.each do |item|
            #     # Each element is of type ::Google::Cloud::Billing::V1::ProjectBillingInfo.
            #     p item
            #   end
            #
            def list_project_billing_info request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::Billing::V1::ListProjectBillingInfoRequest

              # Converts hash and nil to an options object
              options = ::Gapic::CallOptions.new(**options.to_h) if options.respond_to? :to_h

              # Customize the options with defaults
              metadata = @config.rpcs.list_project_billing_info.metadata.to_h

              # Set x-goog-api-client, x-goog-user-project and x-goog-api-version headers
              metadata[:"x-goog-api-client"] ||= ::Gapic::Headers.x_goog_api_client \
                lib_name: @config.lib_name, lib_version: @config.lib_version,
                gapic_version: ::Google::Cloud::Billing::V1::VERSION
              metadata[:"x-goog-api-version"] = API_VERSION unless API_VERSION.empty?
              metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id

              header_params = {}
              if request.name
                header_params["name"] = request.name
              end

              request_params_header = header_params.map { |k, v| "#{k}=#{v}" }.join("&")
              metadata[:"x-goog-request-params"] ||= request_params_header

              options.apply_defaults timeout:      @config.rpcs.list_project_billing_info.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.list_project_billing_info.retry_policy

              options.apply_defaults timeout:      @config.timeout,
                                     metadata:     @config.metadata,
                                     retry_policy: @config.retry_policy

              @cloud_billing_stub.call_rpc :list_project_billing_info, request, options: options do |response, operation|
                response = ::Gapic::PagedEnumerable.new @cloud_billing_stub, :list_project_billing_info, request, response, operation, options
                yield response, operation if block_given?
                throw :response, response
              end
            rescue ::GRPC::BadStatus => e
              raise ::Google::Cloud::Error.from_error(e)
            end

            ##
            # 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.
            #
            # @overload get_project_billing_info(request, options = nil)
            #   Pass arguments to `get_project_billing_info` via a request object, either of type
            #   {::Google::Cloud::Billing::V1::GetProjectBillingInfoRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::Billing::V1::GetProjectBillingInfoRequest, ::Hash]
            #     A request object representing the call parameters. Required. To specify no
            #     parameters, or to keep all the default parameter values, pass an empty Hash.
            #   @param options [::Gapic::CallOptions, ::Hash]
            #     Overrides the default settings for this call, e.g, timeout, retries, etc. Optional.
            #
            # @overload get_project_billing_info(name: nil)
            #   Pass arguments to `get_project_billing_info` via keyword arguments. Note that at
            #   least one keyword argument is required. To specify no parameters, or to keep all
            #   the default parameter values, pass an empty Hash as a request object (see above).
            #
            #   @param name [::String]
            #     Required. The resource name of the project for which billing information is
            #     retrieved. For example, `projects/tokyo-rain-123`.
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Cloud::Billing::V1::ProjectBillingInfo]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Cloud::Billing::V1::ProjectBillingInfo]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/billing/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::Billing::V1::CloudBilling::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::Billing::V1::GetProjectBillingInfoRequest.new
            #
            #   # Call the get_project_billing_info method.
            #   result = client.get_project_billing_info request
            #
            #   # The returned object is of type Google::Cloud::Billing::V1::ProjectBillingInfo.
            #   p result
            #
            def get_project_billing_info request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::Billing::V1::GetProjectBillingInfoRequest

              # Converts hash and nil to an options object
              options = ::Gapic::CallOptions.new(**options.to_h) if options.respond_to? :to_h

              # Customize the options with defaults
              metadata = @config.rpcs.get_project_billing_info.metadata.to_h

              # Set x-goog-api-client, x-goog-user-project and x-goog-api-version headers
              metadata[:"x-goog-api-client"] ||= ::Gapic::Headers.x_goog_api_client \
                lib_name: @config.lib_name, lib_version: @config.lib_version,
                gapic_version: ::Google::Cloud::Billing::V1::VERSION
              metadata[:"x-goog-api-version"] = API_VERSION unless API_VERSION.empty?
              metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id

              header_params = {}
              if request.name
                header_params["name"] = request.name
              end

              request_params_header = header_params.map { |k, v| "#{k}=#{v}" }.join("&")
              metadata[:"x-goog-request-params"] ||= request_params_header

              options.apply_defaults timeout:      @config.rpcs.get_project_billing_info.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.get_project_billing_info.retry_policy

              options.apply_defaults timeout:      @config.timeout,
                                     metadata:     @config.metadata,
                                     retry_policy: @config.retry_policy

              @cloud_billing_stub.call_rpc :get_project_billing_info, request, options: options do |response, operation|
                yield response, operation if block_given?
              end
            rescue ::GRPC::BadStatus => e
              raise ::Google::Cloud::Error.from_error(e)
            end

            ##
            # 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.
            #
            # @overload update_project_billing_info(request, options = nil)
            #   Pass arguments to `update_project_billing_info` via a request object, either of type
            #   {::Google::Cloud::Billing::V1::UpdateProjectBillingInfoRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::Billing::V1::UpdateProjectBillingInfoRequest, ::Hash]
            #     A request object representing the call parameters. Required. To specify no
            #     parameters, or to keep all the default parameter values, pass an empty Hash.
            #   @param options [::Gapic::CallOptions, ::Hash]
            #     Overrides the default settings for this call, e.g, timeout, retries, etc. Optional.
            #
            # @overload update_project_billing_info(name: nil, project_billing_info: nil)
            #   Pass arguments to `update_project_billing_info` via keyword arguments. Note that at
            #   least one keyword argument is required. To specify no parameters, or to keep all
            #   the default parameter values, pass an empty Hash as a request object (see above).
            #
            #   @param name [::String]
            #     Required. The resource name of the project associated with the billing
            #     information that you want to update. For example,
            #     `projects/tokyo-rain-123`.
            #   @param project_billing_info [::Google::Cloud::Billing::V1::ProjectBillingInfo, ::Hash]
            #     The new billing information for the project. Output-only fields are
            #     ignored; thus, you can leave empty all fields except
            #     `billing_account_name`.
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Cloud::Billing::V1::ProjectBillingInfo]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Cloud::Billing::V1::ProjectBillingInfo]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/billing/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::Billing::V1::CloudBilling::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::Billing::V1::UpdateProjectBillingInfoRequest.new
            #
            #   # Call the update_project_billing_info method.
            #   result = client.update_project_billing_info request
            #
            #   # The returned object is of type Google::Cloud::Billing::V1::ProjectBillingInfo.
            #   p result
            #
            def update_project_billing_info request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::Billing::V1::UpdateProjectBillingInfoRequest

              # Converts hash and nil to an options object
              options = ::Gapic::CallOptions.new(**options.to_h) if options.respond_to? :to_h

              # Customize the options with defaults
              metadata = @config.rpcs.update_project_billing_info.metadata.to_h

              # Set x-goog-api-client, x-goog-user-project and x-goog-api-version headers
              metadata[:"x-goog-api-client"] ||= ::Gapic::Headers.x_goog_api_client \
                lib_name: @config.lib_name, lib_version: @config.lib_version,
                gapic_version: ::Google::Cloud::Billing::V1::VERSION
              metadata[:"x-goog-api-version"] = API_VERSION unless API_VERSION.empty?
              metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id

              header_params = {}
              if request.name
                header_params["name"] = request.name
              end

              request_params_header = header_params.map { |k, v| "#{k}=#{v}" }.join("&")
              metadata[:"x-goog-request-params"] ||= request_params_header

              options.apply_defaults timeout:      @config.rpcs.update_project_billing_info.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.update_project_billing_info.retry_policy

              options.apply_defaults timeout:      @config.timeout,
                                     metadata:     @config.metadata,
                                     retry_policy: @config.retry_policy

              @cloud_billing_stub.call_rpc :update_project_billing_info, request, options: options do |response, operation|
                yield response, operation if block_given?
              end
            rescue ::GRPC::BadStatus => e
              raise ::Google::Cloud::Error.from_error(e)
            end

            ##
            # 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).
            #
            # @overload get_iam_policy(request, options = nil)
            #   Pass arguments to `get_iam_policy` via a request object, either of type
            #   {::Google::Iam::V1::GetIamPolicyRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Iam::V1::GetIamPolicyRequest, ::Hash]
            #     A request object representing the call parameters. Required. To specify no
            #     parameters, or to keep all the default parameter values, pass an empty Hash.
            #   @param options [::Gapic::CallOptions, ::Hash]
            #     Overrides the default settings for this call, e.g, timeout, retries, etc. Optional.
            #
            # @overload get_iam_policy(resource: nil, options: nil)
            #   Pass arguments to `get_iam_policy` via keyword arguments. Note that at
            #   least one keyword argument is required. To specify no parameters, or to keep all
            #   the default parameter values, pass an empty Hash as a request object (see above).
            #
            #   @param resource [::String]
            #     REQUIRED: The resource for which the policy is being requested.
            #     See the operation documentation for the appropriate value for this field.
            #   @param options [::Google::Iam::V1::GetPolicyOptions, ::Hash]
            #     OPTIONAL: A `GetPolicyOptions` object for specifying options to
            #     `GetIamPolicy`.
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Iam::V1::Policy]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Iam::V1::Policy]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/billing/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::Billing::V1::CloudBilling::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Iam::V1::GetIamPolicyRequest.new
            #
            #   # Call the get_iam_policy method.
            #   result = client.get_iam_policy request
            #
            #   # The returned object is of type Google::Iam::V1::Policy.
            #   p result
            #
            def get_iam_policy request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Iam::V1::GetIamPolicyRequest

              # Converts hash and nil to an options object
              options = ::Gapic::CallOptions.new(**options.to_h) if options.respond_to? :to_h

              # Customize the options with defaults
              metadata = @config.rpcs.get_iam_policy.metadata.to_h

              # Set x-goog-api-client, x-goog-user-project and x-goog-api-version headers
              metadata[:"x-goog-api-client"] ||= ::Gapic::Headers.x_goog_api_client \
                lib_name: @config.lib_name, lib_version: @config.lib_version,
                gapic_version: ::Google::Cloud::Billing::V1::VERSION
              metadata[:"x-goog-api-version"] = API_VERSION unless API_VERSION.empty?
              metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id

              header_params = {}
              if request.resource
                header_params["resource"] = request.resource
              end

              request_params_header = header_params.map { |k, v| "#{k}=#{v}" }.join("&")
              metadata[:"x-goog-request-params"] ||= request_params_header

              options.apply_defaults timeout:      @config.rpcs.get_iam_policy.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.get_iam_policy.retry_policy

              options.apply_defaults timeout:      @config.timeout,
                                     metadata:     @config.metadata,
                                     retry_policy: @config.retry_policy

              @cloud_billing_stub.call_rpc :get_iam_policy, request, options: options do |response, operation|
                yield response, operation if block_given?
              end
            rescue ::GRPC::BadStatus => e
              raise ::Google::Cloud::Error.from_error(e)
            end

            ##
            # 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).
            #
            # @overload set_iam_policy(request, options = nil)
            #   Pass arguments to `set_iam_policy` via a request object, either of type
            #   {::Google::Iam::V1::SetIamPolicyRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Iam::V1::SetIamPolicyRequest, ::Hash]
            #     A request object representing the call parameters. Required. To specify no
            #     parameters, or to keep all the default parameter values, pass an empty Hash.
            #   @param options [::Gapic::CallOptions, ::Hash]
            #     Overrides the default settings for this call, e.g, timeout, retries, etc. Optional.
            #
            # @overload set_iam_policy(resource: nil, policy: nil, update_mask: nil)
            #   Pass arguments to `set_iam_policy` via keyword arguments. Note that at
            #   least one keyword argument is required. To specify no parameters, or to keep all
            #   the default parameter values, pass an empty Hash as a request object (see above).
            #
            #   @param resource [::String]
            #     REQUIRED: The resource for which the policy is being specified.
            #     See the operation documentation for the appropriate value for this field.
            #   @param policy [::Google::Iam::V1::Policy, ::Hash]
            #     REQUIRED: The complete policy to be applied to the `resource`. The size of
            #     the policy is limited to a few 10s of KB. An empty policy is a
            #     valid policy but certain Cloud Platform services (such as Projects)
            #     might reject them.
            #   @param update_mask [::Google::Protobuf::FieldMask, ::Hash]
            #     OPTIONAL: A FieldMask specifying which fields of the policy to modify. Only
            #     the fields in the mask will be modified. If no mask is provided, the
            #     following default mask is used:
            #
            #     `paths: "bindings, etag"`
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Iam::V1::Policy]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Iam::V1::Policy]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/billing/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::Billing::V1::CloudBilling::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Iam::V1::SetIamPolicyRequest.new
            #
            #   # Call the set_iam_policy method.
            #   result = client.set_iam_policy request
            #
            #   # The returned object is of type Google::Iam::V1::Policy.
            #   p result
            #
            def set_iam_policy request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Iam::V1::SetIamPolicyRequest

              # Converts hash and nil to an options object
              options = ::Gapic::CallOptions.new(**options.to_h) if options.respond_to? :to_h

              # Customize the options with defaults
              metadata = @config.rpcs.set_iam_policy.metadata.to_h

              # Set x-goog-api-client, x-goog-user-project and x-goog-api-version headers
              metadata[:"x-goog-api-client"] ||= ::Gapic::Headers.x_goog_api_client \
                lib_name: @config.lib_name, lib_version: @config.lib_version,
                gapic_version: ::Google::Cloud::Billing::V1::VERSION
              metadata[:"x-goog-api-version"] = API_VERSION unless API_VERSION.empty?
              metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id

              header_params = {}
              if request.resource
                header_params["resource"] = request.resource
              end

              request_params_header = header_params.map { |k, v| "#{k}=#{v}" }.join("&")
              metadata[:"x-goog-request-params"] ||= request_params_header

              options.apply_defaults timeout:      @config.rpcs.set_iam_policy.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.set_iam_policy.retry_policy

              options.apply_defaults timeout:      @config.timeout,
                                     metadata:     @config.metadata,
                                     retry_policy: @config.retry_policy

              @cloud_billing_stub.call_rpc :set_iam_policy, request, options: options do |response, operation|
                yield response, operation if block_given?
              end
            rescue ::GRPC::BadStatus => e
              raise ::Google::Cloud::Error.from_error(e)
            end

            ##
            # 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.
            #
            # @overload test_iam_permissions(request, options = nil)
            #   Pass arguments to `test_iam_permissions` via a request object, either of type
            #   {::Google::Iam::V1::TestIamPermissionsRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Iam::V1::TestIamPermissionsRequest, ::Hash]
            #     A request object representing the call parameters. Required. To specify no
            #     parameters, or to keep all the default parameter values, pass an empty Hash.
            #   @param options [::Gapic::CallOptions, ::Hash]
            #     Overrides the default settings for this call, e.g, timeout, retries, etc. Optional.
            #
            # @overload test_iam_permissions(resource: nil, permissions: nil)
            #   Pass arguments to `test_iam_permissions` via keyword arguments. Note that at
            #   least one keyword argument is required. To specify no parameters, or to keep all
            #   the default parameter values, pass an empty Hash as a request object (see above).
            #
            #   @param resource [::String]
            #     REQUIRED: The resource for which the policy detail is being requested.
            #     See the operation documentation for the appropriate value for this field.
            #   @param permissions [::Array<::String>]
            #     The set of permissions to check for the `resource`. Permissions with
            #     wildcards (such as '*' or 'storage.*') are not allowed. For more
            #     information see
            #     [IAM Overview](https://cloud.google.com/iam/docs/overview#permissions).
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Iam::V1::TestIamPermissionsResponse]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Iam::V1::TestIamPermissionsResponse]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/billing/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::Billing::V1::CloudBilling::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Iam::V1::TestIamPermissionsRequest.new
            #
            #   # Call the test_iam_permissions method.
            #   result = client.test_iam_permissions request
            #
            #   # The returned object is of type Google::Iam::V1::TestIamPermissionsResponse.
            #   p result
            #
            def test_iam_permissions request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Iam::V1::TestIamPermissionsRequest

              # Converts hash and nil to an options object
              options = ::Gapic::CallOptions.new(**options.to_h) if options.respond_to? :to_h

              # Customize the options with defaults
              metadata = @config.rpcs.test_iam_permissions.metadata.to_h

              # Set x-goog-api-client, x-goog-user-project and x-goog-api-version headers
              metadata[:"x-goog-api-client"] ||= ::Gapic::Headers.x_goog_api_client \
                lib_name: @config.lib_name, lib_version: @config.lib_version,
                gapic_version: ::Google::Cloud::Billing::V1::VERSION
              metadata[:"x-goog-api-version"] = API_VERSION unless API_VERSION.empty?
              metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id

              header_params = {}
              if request.resource
                header_params["resource"] = request.resource
              end

              request_params_header = header_params.map { |k, v| "#{k}=#{v}" }.join("&")
              metadata[:"x-goog-request-params"] ||= request_params_header

              options.apply_defaults timeout:      @config.rpcs.test_iam_permissions.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.test_iam_permissions.retry_policy

              options.apply_defaults timeout:      @config.timeout,
                                     metadata:     @config.metadata,
                                     retry_policy: @config.retry_policy

              @cloud_billing_stub.call_rpc :test_iam_permissions, request, options: options do |response, operation|
                yield response, operation if block_given?
              end
            rescue ::GRPC::BadStatus => e
              raise ::Google::Cloud::Error.from_error(e)
            end

            ##
            # Changes which parent organization a billing account belongs to.
            #
            # @overload move_billing_account(request, options = nil)
            #   Pass arguments to `move_billing_account` via a request object, either of type
            #   {::Google::Cloud::Billing::V1::MoveBillingAccountRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::Billing::V1::MoveBillingAccountRequest, ::Hash]
            #     A request object representing the call parameters. Required. To specify no
            #     parameters, or to keep all the default parameter values, pass an empty Hash.
            #   @param options [::Gapic::CallOptions, ::Hash]
            #     Overrides the default settings for this call, e.g, timeout, retries, etc. Optional.
            #
            # @overload move_billing_account(name: nil, destination_parent: nil)
            #   Pass arguments to `move_billing_account` via keyword arguments. Note that at
            #   least one keyword argument is required. To specify no parameters, or to keep all
            #   the default parameter values, pass an empty Hash as a request object (see above).
            #
            #   @param name [::String]
            #     Required. The resource name of the billing account to move.
            #     Must be of the form `billingAccounts/{billing_account_id}`.
            #     The specified billing account cannot be a subaccount, since a subaccount
            #     always belongs to the same organization as its parent account.
            #   @param destination_parent [::String]
            #     Required. The resource name of the Organization to move
            #     the billing account under.
            #     Must be of the form `organizations/{organization_id}`.
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Cloud::Billing::V1::BillingAccount]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Cloud::Billing::V1::BillingAccount]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/billing/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::Billing::V1::CloudBilling::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::Billing::V1::MoveBillingAccountRequest.new
            #
            #   # Call the move_billing_account method.
            #   result = client.move_billing_account request
            #
            #   # The returned object is of type Google::Cloud::Billing::V1::BillingAccount.
            #   p result
            #
            def move_billing_account request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::Billing::V1::MoveBillingAccountRequest

              # Converts hash and nil to an options object
              options = ::Gapic::CallOptions.new(**options.to_h) if options.respond_to? :to_h

              # Customize the options with defaults
              metadata = @config.rpcs.move_billing_account.metadata.to_h

              # Set x-goog-api-client, x-goog-user-project and x-goog-api-version headers
              metadata[:"x-goog-api-client"] ||= ::Gapic::Headers.x_goog_api_client \
                lib_name: @config.lib_name, lib_version: @config.lib_version,
                gapic_version: ::Google::Cloud::Billing::V1::VERSION
              metadata[:"x-goog-api-version"] = API_VERSION unless API_VERSION.empty?
              metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id

              header_params = {}
              if request.name
                header_params["name"] = request.name
              end

              request_params_header = header_params.map { |k, v| "#{k}=#{v}" }.join("&")
              metadata[:"x-goog-request-params"] ||= request_params_header

              options.apply_defaults timeout:      @config.rpcs.move_billing_account.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.move_billing_account.retry_policy

              options.apply_defaults timeout:      @config.timeout,
                                     metadata:     @config.metadata,
                                     retry_policy: @config.retry_policy

              @cloud_billing_stub.call_rpc :move_billing_account, request, options: options do |response, operation|
                yield response, operation if block_given?
              end
            rescue ::GRPC::BadStatus => e
              raise ::Google::Cloud::Error.from_error(e)
            end

            ##
            # Configuration class for the CloudBilling API.
            #
            # This class represents the configuration for CloudBilling,
            # providing control over timeouts, retry behavior, logging, transport
            # parameters, and other low-level controls. Certain parameters can also be
            # applied individually to specific RPCs. See
            # {::Google::Cloud::Billing::V1::CloudBilling::Client::Configuration::Rpcs}
            # for a list of RPCs that can be configured independently.
            #
            # Configuration can be applied globally to all clients, or to a single client
            # on construction.
            #
            # @example
            #
            #   # Modify the global config, setting the timeout for
            #   # get_billing_account to 20 seconds,
            #   # and all remaining timeouts to 10 seconds.
            #   ::Google::Cloud::Billing::V1::CloudBilling::Client.configure do |config|
            #     config.timeout = 10.0
            #     config.rpcs.get_billing_account.timeout = 20.0
            #   end
            #
            #   # Apply the above configuration only to a new client.
            #   client = ::Google::Cloud::Billing::V1::CloudBilling::Client.new do |config|
            #     config.timeout = 10.0
            #     config.rpcs.get_billing_account.timeout = 20.0
            #   end
            #
            # @!attribute [rw] endpoint
            #   A custom service endpoint, as a hostname or hostname:port. The default is
            #   nil, indicating to use the default endpoint in the current universe domain.
            #   @return [::String,nil]
            # @!attribute [rw] credentials
            #   Credentials to send with calls. You may provide any of the following types:
            #    *  (`String`) The path to a service account key file in JSON format
            #    *  (`Hash`) A service account key as a Hash
            #    *  (`Google::Auth::Credentials`) A googleauth credentials object
            #       (see the [googleauth docs](https://rubydoc.info/gems/googleauth/Google/Auth/Credentials))
            #    *  (`Signet::OAuth2::Client`) A signet oauth2 client object
            #       (see the [signet docs](https://rubydoc.info/gems/signet/Signet/OAuth2/Client))
            #    *  (`GRPC::Core::Channel`) a gRPC channel with included credentials
            #    *  (`GRPC::Core::ChannelCredentials`) a gRPC credentails object
            #    *  (`nil`) indicating no credentials
            #
            #   Warning: If you accept a credential configuration (JSON file or Hash) from an
            #   external source for authentication to Google Cloud, you must validate it before
            #   providing it to a Google API client library. Providing an unvalidated credential
            #   configuration to Google APIs can compromise the security of your systems and data.
            #   For more information, refer to [Validate credential configurations from external
            #   sources](https://cloud.google.com/docs/authentication/external/externally-sourced-credentials).
            #   @return [::Object]
            # @!attribute [rw] scope
            #   The OAuth scopes
            #   @return [::Array<::String>]
            # @!attribute [rw] lib_name
            #   The library name as recorded in instrumentation and logging
            #   @return [::String]
            # @!attribute [rw] lib_version
            #   The library version as recorded in instrumentation and logging
            #   @return [::String]
            # @!attribute [rw] channel_args
            #   Extra parameters passed to the gRPC channel. Note: this is ignored if a
            #   `GRPC::Core::Channel` object is provided as the credential.
            #   @return [::Hash]
            # @!attribute [rw] interceptors
            #   An array of interceptors that are run before calls are executed.
            #   @return [::Array<::GRPC::ClientInterceptor>]
            # @!attribute [rw] timeout
            #   The call timeout in seconds.
            #   @return [::Numeric]
            # @!attribute [rw] metadata
            #   Additional gRPC headers to be sent with the call.
            #   @return [::Hash{::Symbol=>::String}]
            # @!attribute [rw] retry_policy
            #   The retry policy. The value is a hash with the following keys:
            #    *  `:initial_delay` (*type:* `Numeric`) - The initial delay in seconds.
            #    *  `:max_delay` (*type:* `Numeric`) - The max delay in seconds.
            #    *  `:multiplier` (*type:* `Numeric`) - The incremental backoff multiplier.
            #    *  `:retry_codes` (*type:* `Array<String>`) - The error codes that should
            #       trigger a retry.
            #   @return [::Hash]
            # @!attribute [rw] quota_project
            #   A separate project against which to charge quota.
            #   @return [::String]
            # @!attribute [rw] universe_domain
            #   The universe domain within which to make requests. This determines the
            #   default endpoint URL. The default value of nil uses the environment
            #   universe (usually the default "googleapis.com" universe).
            #   @return [::String,nil]
            # @!attribute [rw] logger
            #   A custom logger to use for request/response debug logging, or the value
            #   `:default` (the default) to construct a default logger, or `nil` to
            #   explicitly disable logging.
            #   @return [::Logger,:default,nil]
            #
            class Configuration
              extend ::Gapic::Config

              # @private
              # The endpoint specific to the default "googleapis.com" universe. Deprecated.
              DEFAULT_ENDPOINT = "cloudbilling.googleapis.com"

              config_attr :endpoint,      nil, ::String, nil
              config_attr :credentials,   nil do |value|
                allowed = [::String, ::Hash, ::Proc, ::Symbol, ::Google::Auth::Credentials, ::Google::Auth::BaseClient, ::Signet::OAuth2::Client, nil]
                allowed += [::GRPC::Core::Channel, ::GRPC::Core::ChannelCredentials] if defined? ::GRPC::Core::Channel
                allowed.any? { |klass| klass === value }
              end
              config_attr :scope,         nil, ::String, ::Array, nil
              config_attr :lib_name,      nil, ::String, nil
              config_attr :lib_version,   nil, ::String, nil
              config_attr(:channel_args,  { "grpc.service_config_disable_resolution" => 1 }, ::Hash, nil)
              config_attr :interceptors,  nil, ::Array, nil
              config_attr :timeout,       nil, ::Numeric, nil
              config_attr :metadata,      nil, ::Hash, nil
              config_attr :retry_policy,  nil, ::Hash, ::Proc, nil
              config_attr :quota_project, nil, ::String, nil
              config_attr :universe_domain, nil, ::String, nil
              config_attr :logger, :default, ::Logger, nil, :default

              # @private
              def initialize parent_config = nil
                @parent_config = parent_config unless parent_config.nil?

                yield self if block_given?
              end

              ##
              # Configurations for individual RPCs
              # @return [Rpcs]
              #
              def rpcs
                @rpcs ||= begin
                  parent_rpcs = nil
                  parent_rpcs = @parent_config.rpcs if defined?(@parent_config) && @parent_config.respond_to?(:rpcs)
                  Rpcs.new parent_rpcs
                end
              end

              ##
              # Configuration for the channel pool
              # @return [::Gapic::ServiceStub::ChannelPool::Configuration]
              #
              def channel_pool
                @channel_pool ||= ::Gapic::ServiceStub::ChannelPool::Configuration.new
              end

              ##
              # Configuration RPC class for the CloudBilling API.
              #
              # Includes fields providing the configuration for each RPC in this service.
              # Each configuration object is of type `Gapic::Config::Method` and includes
              # the following configuration fields:
              #
              #  *  `timeout` (*type:* `Numeric`) - The call timeout in seconds
              #  *  `metadata` (*type:* `Hash{Symbol=>String}`) - Additional gRPC headers
              #  *  `retry_policy (*type:* `Hash`) - The retry policy. The policy fields
              #     include the following keys:
              #      *  `:initial_delay` (*type:* `Numeric`) - The initial delay in seconds.
              #      *  `:max_delay` (*type:* `Numeric`) - The max delay in seconds.
              #      *  `:multiplier` (*type:* `Numeric`) - The incremental backoff multiplier.
              #      *  `:retry_codes` (*type:* `Array<String>`) - The error codes that should
              #         trigger a retry.
              #
              class Rpcs
                ##
                # RPC-specific configuration for `get_billing_account`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :get_billing_account
                ##
                # RPC-specific configuration for `list_billing_accounts`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :list_billing_accounts
                ##
                # RPC-specific configuration for `update_billing_account`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :update_billing_account
                ##
                # RPC-specific configuration for `create_billing_account`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :create_billing_account
                ##
                # RPC-specific configuration for `list_project_billing_info`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :list_project_billing_info
                ##
                # RPC-specific configuration for `get_project_billing_info`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :get_project_billing_info
                ##
                # RPC-specific configuration for `update_project_billing_info`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :update_project_billing_info
                ##
                # RPC-specific configuration for `get_iam_policy`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :get_iam_policy
                ##
                # RPC-specific configuration for `set_iam_policy`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :set_iam_policy
                ##
                # RPC-specific configuration for `test_iam_permissions`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :test_iam_permissions
                ##
                # RPC-specific configuration for `move_billing_account`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :move_billing_account

                # @private
                def initialize parent_rpcs = nil
                  get_billing_account_config = parent_rpcs.get_billing_account if parent_rpcs.respond_to? :get_billing_account
                  @get_billing_account = ::Gapic::Config::Method.new get_billing_account_config
                  list_billing_accounts_config = parent_rpcs.list_billing_accounts if parent_rpcs.respond_to? :list_billing_accounts
                  @list_billing_accounts = ::Gapic::Config::Method.new list_billing_accounts_config
                  update_billing_account_config = parent_rpcs.update_billing_account if parent_rpcs.respond_to? :update_billing_account
                  @update_billing_account = ::Gapic::Config::Method.new update_billing_account_config
                  create_billing_account_config = parent_rpcs.create_billing_account if parent_rpcs.respond_to? :create_billing_account
                  @create_billing_account = ::Gapic::Config::Method.new create_billing_account_config
                  list_project_billing_info_config = parent_rpcs.list_project_billing_info if parent_rpcs.respond_to? :list_project_billing_info
                  @list_project_billing_info = ::Gapic::Config::Method.new list_project_billing_info_config
                  get_project_billing_info_config = parent_rpcs.get_project_billing_info if parent_rpcs.respond_to? :get_project_billing_info
                  @get_project_billing_info = ::Gapic::Config::Method.new get_project_billing_info_config
                  update_project_billing_info_config = parent_rpcs.update_project_billing_info if parent_rpcs.respond_to? :update_project_billing_info
                  @update_project_billing_info = ::Gapic::Config::Method.new update_project_billing_info_config
                  get_iam_policy_config = parent_rpcs.get_iam_policy if parent_rpcs.respond_to? :get_iam_policy
                  @get_iam_policy = ::Gapic::Config::Method.new get_iam_policy_config
                  set_iam_policy_config = parent_rpcs.set_iam_policy if parent_rpcs.respond_to? :set_iam_policy
                  @set_iam_policy = ::Gapic::Config::Method.new set_iam_policy_config
                  test_iam_permissions_config = parent_rpcs.test_iam_permissions if parent_rpcs.respond_to? :test_iam_permissions
                  @test_iam_permissions = ::Gapic::Config::Method.new test_iam_permissions_config
                  move_billing_account_config = parent_rpcs.move_billing_account if parent_rpcs.respond_to? :move_billing_account
                  @move_billing_account = ::Gapic::Config::Method.new move_billing_account_config

                  yield self if block_given?
                end
              end
            end
          end
        end
      end
    end
  end
end
