# frozen_string_literal: true

# Copyright 2023 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 "gapic/operation"

module Google
  module Cloud
    module Vision
      module V1p3beta1
        module ProductSearch
          module Rest
            # Service that implements Longrunning Operations API.
            class Operations
              # @private
              DEFAULT_ENDPOINT_TEMPLATE = "vision.$UNIVERSE_DOMAIN$"

              # @private
              attr_reader :operations_stub

              ##
              # Configuration for the ProductSearch Operations API.
              #
              # @yield [config] Configure the Operations client.
              # @yieldparam config [Operations::Configuration]
              #
              # @return [Operations::Configuration]
              #
              def self.configure
                @configure ||= Operations::Configuration.new
                yield @configure if block_given?
                @configure
              end

              ##
              # Configure the ProductSearch Operations 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 {Operations.configure}.
              #
              # @yield [config] Configure the Operations client.
              # @yieldparam config [Operations::Configuration]
              #
              # @return [Operations::Configuration]
              #
              def configure
                yield @config if block_given?
                @config
              end

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

              ##
              # Create a new Operations client object.
              #
              # @yield [config] Configure the Client client.
              # @yieldparam config [Operations::Configuration]
              #
              def initialize
                # Create the configuration object
                @config = Configuration.new Operations.configure

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

                # Create credentials
                credentials = @config.credentials
                credentials ||= Credentials.default scope: @config.scope
                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

                @operations_stub = OperationsServiceStub.new(
                  endpoint: @config.endpoint,
                  endpoint_template: DEFAULT_ENDPOINT_TEMPLATE,
                  universe_domain: @config.universe_domain,
                  credentials: credentials
                )

                # Used by an LRO wrapper for some methods of this service
                @operations_client = self
              end

              # Service calls

              ##
              # Lists operations that match the specified filter in the request. If the
              # server doesn't support this method, it returns `UNIMPLEMENTED`.
              #
              # NOTE: the `name` binding allows API services to override the binding
              # to use different resource name schemes, such as `users/*/operations`. To
              # override the binding, API services can add a binding such as
              # `"/v1/{name=users/*}/operations"` to their service configuration.
              # For backwards compatibility, the default name includes the operations
              # collection id, however overriding users must ensure the name binding
              # is the parent resource, without the operations collection id.
              #
              # @overload list_operations(request, options = nil)
              #   Pass arguments to `list_operations` via a request object, either of type
              #   {::Google::Longrunning::ListOperationsRequest} or an equivalent Hash.
              #
              #   @param request [::Google::Longrunning::ListOperationsRequest, ::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_operations(name: nil, filter: nil, page_size: nil, page_token: nil)
              #   Pass arguments to `list_operations` 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]
              #     The name of the operation's parent resource.
              #   @param filter [::String]
              #     The standard list filter.
              #   @param page_size [::Integer]
              #     The standard list page size.
              #   @param page_token [::String]
              #     The standard list page token.
              # @yield [result, operation] Access the result along with the TransportOperation object
              # @yieldparam result [::Gapic::Operation]
              # @yieldparam operation [::Gapic::Rest::TransportOperation]
              #
              # @return [::Gapic::Operation]
              #
              # @raise [::Google::Cloud::Error] if the REST call is aborted.
              #
              # @example Basic example
              #   require "google/longrunning"
              #
              #   # Create a client object. The client can be reused for multiple calls.
              #   client = Google::Longrunning::Operations::Rest::Client.new
              #
              #   # Create a request. To set request fields, pass in keyword arguments.
              #   request = Google::Longrunning::ListOperationsRequest.new
              #
              #   # Call the list_operations method.
              #   result = client.list_operations 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::Longrunning::Operation.
              #     p item
              #   end
              #
              def list_operations request, options = nil
                raise ::ArgumentError, "request must be provided" if request.nil?

                request = ::Gapic::Protobuf.coerce request, to: ::Google::Longrunning::ListOperationsRequest

                # 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
                call_metadata = @config.rpcs.list_operations.metadata.to_h

                # Set x-goog-api-client and x-goog-user-project headers
                call_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::Vision::V1p3beta1::VERSION,
                  transports_version_send: [:rest]

                call_metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id

                options.apply_defaults timeout:      @config.rpcs.list_operations.timeout,
                                       metadata:     call_metadata,
                                       retry_policy: @config.rpcs.list_operations.retry_policy

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

                @operations_stub.list_operations request, options do |result, operation|
                  result = ::Gapic::Rest::PagedEnumerable.new @operations_stub, :list_operations, "operations", request, result, options
                  yield result, operation if block_given?
                  return result
                end
              rescue ::Gapic::Rest::Error => e
                raise ::Google::Cloud::Error.from_error(e)
              end

              ##
              # Gets the latest state of a long-running operation.  Clients can use this
              # method to poll the operation result at intervals as recommended by the API
              # service.
              #
              # @overload get_operation(request, options = nil)
              #   Pass arguments to `get_operation` via a request object, either of type
              #   {::Google::Longrunning::GetOperationRequest} or an equivalent Hash.
              #
              #   @param request [::Google::Longrunning::GetOperationRequest, ::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_operation(name: nil)
              #   Pass arguments to `get_operation` 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]
              #     The name of the operation resource.
              # @yield [result, operation] Access the result along with the TransportOperation object
              # @yieldparam result [::Gapic::Operation]
              # @yieldparam operation [::Gapic::Rest::TransportOperation]
              #
              # @return [::Gapic::Operation]
              #
              # @raise [::Google::Cloud::Error] if the REST call is aborted.
              #
              # @example Basic example
              #   require "google/longrunning"
              #
              #   # Create a client object. The client can be reused for multiple calls.
              #   client = Google::Longrunning::Operations::Rest::Client.new
              #
              #   # Create a request. To set request fields, pass in keyword arguments.
              #   request = Google::Longrunning::GetOperationRequest.new
              #
              #   # Call the get_operation method.
              #   result = client.get_operation request
              #
              #   # The returned object is of type Gapic::Operation. You can use it to
              #   # check the status of an operation, cancel it, or wait for results.
              #   # Here is how to wait for a response.
              #   result.wait_until_done! timeout: 60
              #   if result.response?
              #     p result.response
              #   else
              #     puts "No response received."
              #   end
              #
              def get_operation request, options = nil
                raise ::ArgumentError, "request must be provided" if request.nil?

                request = ::Gapic::Protobuf.coerce request, to: ::Google::Longrunning::GetOperationRequest

                # 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
                call_metadata = @config.rpcs.get_operation.metadata.to_h

                # Set x-goog-api-client and x-goog-user-project headers
                call_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::Vision::V1p3beta1::VERSION,
                  transports_version_send: [:rest]

                call_metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id

                options.apply_defaults timeout:      @config.rpcs.get_operation.timeout,
                                       metadata:     call_metadata,
                                       retry_policy: @config.rpcs.get_operation.retry_policy

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

                @operations_stub.get_operation request, options do |result, operation|
                  result = ::Gapic::Operation.new result, @operations_client, options: options
                  yield result, operation if block_given?
                  return result
                end
              rescue ::Gapic::Rest::Error => e
                raise ::Google::Cloud::Error.from_error(e)
              end

              ##
              # Deletes a long-running operation. This method indicates that the client is
              # no longer interested in the operation result. It does not cancel the
              # operation. If the server doesn't support this method, it returns
              # `google.rpc.Code.UNIMPLEMENTED`.
              #
              # @overload delete_operation(request, options = nil)
              #   Pass arguments to `delete_operation` via a request object, either of type
              #   {::Google::Longrunning::DeleteOperationRequest} or an equivalent Hash.
              #
              #   @param request [::Google::Longrunning::DeleteOperationRequest, ::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 delete_operation(name: nil)
              #   Pass arguments to `delete_operation` 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]
              #     The name of the operation resource to be deleted.
              # @yield [result, operation] Access the result along with the TransportOperation object
              # @yieldparam result [::Google::Protobuf::Empty]
              # @yieldparam operation [::Gapic::Rest::TransportOperation]
              #
              # @return [::Google::Protobuf::Empty]
              #
              # @raise [::Google::Cloud::Error] if the REST call is aborted.
              #
              # @example Basic example
              #   require "google/longrunning"
              #
              #   # Create a client object. The client can be reused for multiple calls.
              #   client = Google::Longrunning::Operations::Rest::Client.new
              #
              #   # Create a request. To set request fields, pass in keyword arguments.
              #   request = Google::Longrunning::DeleteOperationRequest.new
              #
              #   # Call the delete_operation method.
              #   result = client.delete_operation request
              #
              #   # The returned object is of type Google::Protobuf::Empty.
              #   p result
              #
              def delete_operation request, options = nil
                raise ::ArgumentError, "request must be provided" if request.nil?

                request = ::Gapic::Protobuf.coerce request, to: ::Google::Longrunning::DeleteOperationRequest

                # 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
                call_metadata = @config.rpcs.delete_operation.metadata.to_h

                # Set x-goog-api-client and x-goog-user-project headers
                call_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::Vision::V1p3beta1::VERSION,
                  transports_version_send: [:rest]

                call_metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id

                options.apply_defaults timeout:      @config.rpcs.delete_operation.timeout,
                                       metadata:     call_metadata,
                                       retry_policy: @config.rpcs.delete_operation.retry_policy

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

                @operations_stub.delete_operation request, options do |result, operation|
                  yield result, operation if block_given?
                  return result
                end
              rescue ::Gapic::Rest::Error => e
                raise ::Google::Cloud::Error.from_error(e)
              end

              ##
              # Starts asynchronous cancellation on a long-running operation.  The server
              # makes a best effort to cancel the operation, but success is not
              # guaranteed.  If the server doesn't support this method, it returns
              # `google.rpc.Code.UNIMPLEMENTED`.  Clients can use
              # Operations.GetOperation or
              # other methods to check whether the cancellation succeeded or whether the
              # operation completed despite cancellation. On successful cancellation,
              # the operation is not deleted; instead, it becomes an operation with
              # an {::Google::Longrunning::Operation#error Operation.error} value with a {::Google::Rpc::Status#code google.rpc.Status.code} of 1,
              # corresponding to `Code.CANCELLED`.
              #
              # @overload cancel_operation(request, options = nil)
              #   Pass arguments to `cancel_operation` via a request object, either of type
              #   {::Google::Longrunning::CancelOperationRequest} or an equivalent Hash.
              #
              #   @param request [::Google::Longrunning::CancelOperationRequest, ::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 cancel_operation(name: nil)
              #   Pass arguments to `cancel_operation` 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]
              #     The name of the operation resource to be cancelled.
              # @yield [result, operation] Access the result along with the TransportOperation object
              # @yieldparam result [::Google::Protobuf::Empty]
              # @yieldparam operation [::Gapic::Rest::TransportOperation]
              #
              # @return [::Google::Protobuf::Empty]
              #
              # @raise [::Google::Cloud::Error] if the REST call is aborted.
              #
              # @example Basic example
              #   require "google/longrunning"
              #
              #   # Create a client object. The client can be reused for multiple calls.
              #   client = Google::Longrunning::Operations::Rest::Client.new
              #
              #   # Create a request. To set request fields, pass in keyword arguments.
              #   request = Google::Longrunning::CancelOperationRequest.new
              #
              #   # Call the cancel_operation method.
              #   result = client.cancel_operation request
              #
              #   # The returned object is of type Google::Protobuf::Empty.
              #   p result
              #
              def cancel_operation request, options = nil
                raise ::ArgumentError, "request must be provided" if request.nil?

                request = ::Gapic::Protobuf.coerce request, to: ::Google::Longrunning::CancelOperationRequest

                # 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
                call_metadata = @config.rpcs.cancel_operation.metadata.to_h

                # Set x-goog-api-client and x-goog-user-project headers
                call_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::Vision::V1p3beta1::VERSION,
                  transports_version_send: [:rest]

                call_metadata[:"x-goog-user-project"] = @quota_project_id if @quota_project_id

                options.apply_defaults timeout:      @config.rpcs.cancel_operation.timeout,
                                       metadata:     call_metadata,
                                       retry_policy: @config.rpcs.cancel_operation.retry_policy

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

                @operations_stub.cancel_operation request, options do |result, operation|
                  yield result, operation if block_given?
                  return result
                end
              rescue ::Gapic::Rest::Error => e
                raise ::Google::Cloud::Error.from_error(e)
              end

              ##
              # Configuration class for the Operations REST API.
              #
              # This class represents the configuration for Operations REST,
              # 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::Longrunning::Operations::Rest::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
              #   # list_operations to 20 seconds,
              #   # and all remaining timeouts to 10 seconds.
              #   ::Google::Longrunning::Operations::Rest::Client.configure do |config|
              #     config.timeout = 10.0
              #     config.rpcs.list_operations.timeout = 20.0
              #   end
              #
              #   # Apply the above configuration only to a new client.
              #   client = ::Google::Longrunning::Operations::Rest::Client.new do |config|
              #     config.timeout = 10.0
              #     config.rpcs.list_operations.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))
              #    *  (`nil`) indicating no 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] timeout
              #   The call timeout in seconds.
              #   @return [::Numeric]
              # @!attribute [rw] metadata
              #   Additional 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]
              #
              class Configuration
                extend ::Gapic::Config

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

                config_attr :endpoint,      nil, ::String, nil
                config_attr :credentials,   nil do |value|
                  allowed = [::String, ::Hash, ::Proc, ::Symbol, ::Google::Auth::Credentials, ::Signet::OAuth2::Client, nil]
                  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 :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

                # @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 RPC class for the Operations 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 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 `list_operations`
                  # @return [::Gapic::Config::Method]
                  #
                  attr_reader :list_operations
                  ##
                  # RPC-specific configuration for `get_operation`
                  # @return [::Gapic::Config::Method]
                  #
                  attr_reader :get_operation
                  ##
                  # RPC-specific configuration for `delete_operation`
                  # @return [::Gapic::Config::Method]
                  #
                  attr_reader :delete_operation
                  ##
                  # RPC-specific configuration for `cancel_operation`
                  # @return [::Gapic::Config::Method]
                  #
                  attr_reader :cancel_operation

                  # @private
                  def initialize parent_rpcs = nil
                    list_operations_config = parent_rpcs.list_operations if parent_rpcs.respond_to? :list_operations
                    @list_operations = ::Gapic::Config::Method.new list_operations_config
                    get_operation_config = parent_rpcs.get_operation if parent_rpcs.respond_to? :get_operation
                    @get_operation = ::Gapic::Config::Method.new get_operation_config
                    delete_operation_config = parent_rpcs.delete_operation if parent_rpcs.respond_to? :delete_operation
                    @delete_operation = ::Gapic::Config::Method.new delete_operation_config
                    cancel_operation_config = parent_rpcs.cancel_operation if parent_rpcs.respond_to? :cancel_operation
                    @cancel_operation = ::Gapic::Config::Method.new cancel_operation_config

                    yield self if block_given?
                  end
                end
              end
            end

            ##
            # @private
            # REST service stub for the Longrunning Operations API.
            # Service stub contains baseline method implementations
            # including transcoding, making the REST call, and deserialing the response.
            class OperationsServiceStub
              def initialize endpoint:, endpoint_template:, universe_domain:, credentials:
                # These require statements are intentionally placed here to initialize
                # the REST modules only when it's required.
                require "gapic/rest"

                @client_stub = ::Gapic::Rest::ClientStub.new endpoint: endpoint,
                                                             endpoint_template: endpoint_template,
                                                             universe_domain: universe_domain,
                                                             credentials: credentials
              end

              ##
              # Baseline implementation for the list_operations REST call
              #
              # @param request_pb [::Google::Longrunning::ListOperationsRequest]
              #   A request object representing the call parameters. Required.
              # @param options [::Gapic::CallOptions]
              #   Overrides the default settings for this call, e.g, timeout, retries etc. Optional.
              #
              # @yield [result, operation] Access the result along with the TransportOperation object
              # @yieldparam result [::Google::Longrunning::ListOperationsResponse]
              # @yieldparam operation [::Gapic::Rest::TransportOperation]
              #
              # @return [::Google::Longrunning::ListOperationsResponse]
              #   A result object deserialized from the server's reply
              def list_operations request_pb, options = nil
                raise ::ArgumentError, "request must be provided" if request_pb.nil?

                verb, uri, query_string_params, body = OperationsServiceStub.transcode_list_operations_request request_pb
                query_string_params = if query_string_params.any?
                                        query_string_params.to_h { |p| p.split "=", 2 }
                                      else
                                        {}
                                      end

                response = @client_stub.make_http_request(
                  verb,
                  uri:     uri,
                  body:    body || "",
                  params:  query_string_params,
                  options: options
                )
                operation = ::Gapic::Rest::TransportOperation.new response
                result = ::Google::Longrunning::ListOperationsResponse.decode_json response.body, ignore_unknown_fields: true

                yield result, operation if block_given?
                result
              end

              ##
              # Baseline implementation for the get_operation REST call
              #
              # @param request_pb [::Google::Longrunning::GetOperationRequest]
              #   A request object representing the call parameters. Required.
              # @param options [::Gapic::CallOptions]
              #   Overrides the default settings for this call, e.g, timeout, retries etc. Optional.
              #
              # @yield [result, operation] Access the result along with the TransportOperation object
              # @yieldparam result [::Google::Longrunning::Operation]
              # @yieldparam operation [::Gapic::Rest::TransportOperation]
              #
              # @return [::Google::Longrunning::Operation]
              #   A result object deserialized from the server's reply
              def get_operation request_pb, options = nil
                raise ::ArgumentError, "request must be provided" if request_pb.nil?

                verb, uri, query_string_params, body = OperationsServiceStub.transcode_get_operation_request request_pb
                query_string_params = if query_string_params.any?
                                        query_string_params.to_h { |p| p.split "=", 2 }
                                      else
                                        {}
                                      end

                response = @client_stub.make_http_request(
                  verb,
                  uri:     uri,
                  body:    body || "",
                  params:  query_string_params,
                  options: options
                )
                operation = ::Gapic::Rest::TransportOperation.new response
                result = ::Google::Longrunning::Operation.decode_json response.body, ignore_unknown_fields: true

                yield result, operation if block_given?
                result
              end

              ##
              # Baseline implementation for the delete_operation REST call
              #
              # @param request_pb [::Google::Longrunning::DeleteOperationRequest]
              #   A request object representing the call parameters. Required.
              # @param options [::Gapic::CallOptions]
              #   Overrides the default settings for this call, e.g, timeout, retries etc. Optional.
              #
              # @yield [result, operation] Access the result along with the TransportOperation object
              # @yieldparam result [::Google::Protobuf::Empty]
              # @yieldparam operation [::Gapic::Rest::TransportOperation]
              #
              # @return [::Google::Protobuf::Empty]
              #   A result object deserialized from the server's reply
              def delete_operation request_pb, options = nil
                raise ::ArgumentError, "request must be provided" if request_pb.nil?

                verb, uri, query_string_params, body = OperationsServiceStub.transcode_delete_operation_request request_pb
                query_string_params = if query_string_params.any?
                                        query_string_params.to_h { |p| p.split "=", 2 }
                                      else
                                        {}
                                      end

                response = @client_stub.make_http_request(
                  verb,
                  uri:     uri,
                  body:    body || "",
                  params:  query_string_params,
                  options: options
                )
                operation = ::Gapic::Rest::TransportOperation.new response
                result = ::Google::Protobuf::Empty.decode_json response.body, ignore_unknown_fields: true

                yield result, operation if block_given?
                result
              end

              ##
              # Baseline implementation for the cancel_operation REST call
              #
              # @param request_pb [::Google::Longrunning::CancelOperationRequest]
              #   A request object representing the call parameters. Required.
              # @param options [::Gapic::CallOptions]
              #   Overrides the default settings for this call, e.g, timeout, retries etc. Optional.
              #
              # @yield [result, operation] Access the result along with the TransportOperation object
              # @yieldparam result [::Google::Protobuf::Empty]
              # @yieldparam operation [::Gapic::Rest::TransportOperation]
              #
              # @return [::Google::Protobuf::Empty]
              #   A result object deserialized from the server's reply
              def cancel_operation request_pb, options = nil
                raise ::ArgumentError, "request must be provided" if request_pb.nil?

                verb, uri, query_string_params, body = OperationsServiceStub.transcode_cancel_operation_request request_pb
                query_string_params = if query_string_params.any?
                                        query_string_params.to_h { |p| p.split "=", 2 }
                                      else
                                        {}
                                      end

                response = @client_stub.make_http_request(
                  verb,
                  uri:     uri,
                  body:    body || "",
                  params:  query_string_params,
                  options: options
                )
                operation = ::Gapic::Rest::TransportOperation.new response
                result = ::Google::Protobuf::Empty.decode_json response.body, ignore_unknown_fields: true

                yield result, operation if block_given?
                result
              end

              ##
              # @private
              #
              # GRPC transcoding helper method for the list_operations REST call
              #
              # @param request_pb [::Google::Longrunning::ListOperationsRequest]
              #   A request object representing the call parameters. Required.
              # @return [Array(String, [String, nil], Hash{String => String})]
              #   Uri, Body, Query string parameters
              def self.transcode_list_operations_request request_pb
                transcoder = Gapic::Rest::GrpcTranscoder.new
                                                        .with_bindings(
                                                          uri_method: :get,
                                                          uri_template: "/v1/{name}",
                                                          matches: [
                                                            ["name", %r{^operations/?$}, false]
                                                          ]
                                                        )
                transcoder.transcode request_pb
              end

              ##
              # @private
              #
              # GRPC transcoding helper method for the get_operation REST call
              #
              # @param request_pb [::Google::Longrunning::GetOperationRequest]
              #   A request object representing the call parameters. Required.
              # @return [Array(String, [String, nil], Hash{String => String})]
              #   Uri, Body, Query string parameters
              def self.transcode_get_operation_request request_pb
                transcoder = Gapic::Rest::GrpcTranscoder.new
                                                        .with_bindings(
                                                          uri_method: :get,
                                                          uri_template: "/v1/{name}",
                                                          matches: [
                                                            ["name", %r{^operations(?:/.*)?$}, true]
                                                          ]
                                                        )
                transcoder.transcode request_pb
              end

              ##
              # @private
              #
              # GRPC transcoding helper method for the delete_operation REST call
              #
              # @param request_pb [::Google::Longrunning::DeleteOperationRequest]
              #   A request object representing the call parameters. Required.
              # @return [Array(String, [String, nil], Hash{String => String})]
              #   Uri, Body, Query string parameters
              def self.transcode_delete_operation_request request_pb
                transcoder = Gapic::Rest::GrpcTranscoder.new
                                                        .with_bindings(
                                                          uri_method: :delete,
                                                          uri_template: "/v1/{name}",
                                                          matches: [
                                                            ["name", %r{^operations(?:/.*)?$}, true]
                                                          ]
                                                        )
                transcoder.transcode request_pb
              end

              ##
              # @private
              #
              # GRPC transcoding helper method for the cancel_operation REST call
              #
              # @param request_pb [::Google::Longrunning::CancelOperationRequest]
              #   A request object representing the call parameters. Required.
              # @return [Array(String, [String, nil], Hash{String => String})]
              #   Uri, Body, Query string parameters
              def self.transcode_cancel_operation_request request_pb
                transcoder = Gapic::Rest::GrpcTranscoder.new
                                                        .with_bindings(
                                                          uri_method: :post,
                                                          uri_template: "/v1/{name}:cancel",
                                                          body: "*",
                                                          matches: [
                                                            ["name", %r{^operations(?:/.*)?$}, true]
                                                          ]
                                                        )
                transcoder.transcode request_pb
              end
            end
          end
        end
      end
    end
  end
end