# frozen_string_literal: true

# Copyright 2022 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/aiplatform/v1/vizier_service_pb"
require "google/cloud/location"
require "google/iam/v1"

module Google
  module Cloud
    module AIPlatform
      module V1
        module VizierService
          ##
          # Client for the VizierService service.
          #
          # Vertex AI Vizier API.
          #
          # Vertex AI Vizier is a service to solve blackbox optimization problems,
          # such as tuning machine learning hyperparameters and searching over deep
          # learning architectures.
          #
          class Client
            # @private
            API_VERSION = ""

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

            include Paths

            # @private
            attr_reader :vizier_service_stub

            ##
            # Configure the VizierService Client class.
            #
            # See {::Google::Cloud::AIPlatform::V1::VizierService::Client::Configuration}
            # for a description of the configuration fields.
            #
            # @example
            #
            #   # Modify the configuration for all VizierService clients
            #   ::Google::Cloud::AIPlatform::V1::VizierService::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", "AIPlatform", "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
              end
              yield @configure if block_given?
              @configure
            end

            ##
            # Configure the VizierService 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::AIPlatform::V1::VizierService::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
              @vizier_service_stub.universe_domain
            end

            ##
            # Create a new VizierService client object.
            #
            # @example
            #
            #   # Create a client using the default configuration
            #   client = ::Google::Cloud::AIPlatform::V1::VizierService::Client.new
            #
            #   # Create a client using a custom configuration
            #   client = ::Google::Cloud::AIPlatform::V1::VizierService::Client.new do |config|
            #     config.timeout = 10.0
            #   end
            #
            # @yield [config] Configure the VizierService 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/aiplatform/v1/vizier_service_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

              @operations_client = Operations.new do |config|
                config.credentials = credentials
                config.quota_project = @quota_project_id
                config.endpoint = @config.endpoint
                config.universe_domain = @config.universe_domain
              end

              @vizier_service_stub = ::Gapic::ServiceStub.new(
                ::Google::Cloud::AIPlatform::V1::VizierService::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
              )

              @vizier_service_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

              @location_client = Google::Cloud::Location::Locations::Client.new do |config|
                config.credentials = credentials
                config.quota_project = @quota_project_id
                config.endpoint = @vizier_service_stub.endpoint
                config.universe_domain = @vizier_service_stub.universe_domain
                config.logger = @vizier_service_stub.logger if config.respond_to? :logger=
              end

              @iam_policy_client = Google::Iam::V1::IAMPolicy::Client.new do |config|
                config.credentials = credentials
                config.quota_project = @quota_project_id
                config.endpoint = @vizier_service_stub.endpoint
                config.universe_domain = @vizier_service_stub.universe_domain
                config.logger = @vizier_service_stub.logger if config.respond_to? :logger=
              end
            end

            ##
            # Get the associated client for long-running operations.
            #
            # @return [::Google::Cloud::AIPlatform::V1::VizierService::Operations]
            #
            attr_reader :operations_client

            ##
            # Get the associated client for mix-in of the Locations.
            #
            # @return [Google::Cloud::Location::Locations::Client]
            #
            attr_reader :location_client

            ##
            # Get the associated client for mix-in of the IAMPolicy.
            #
            # @return [Google::Iam::V1::IAMPolicy::Client]
            #
            attr_reader :iam_policy_client

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

            # Service calls

            ##
            # Creates a Study. A resource name will be generated after creation of the
            # Study.
            #
            # @overload create_study(request, options = nil)
            #   Pass arguments to `create_study` via a request object, either of type
            #   {::Google::Cloud::AIPlatform::V1::CreateStudyRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::AIPlatform::V1::CreateStudyRequest, ::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_study(parent: nil, study: nil)
            #   Pass arguments to `create_study` 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 parent [::String]
            #     Required. The resource name of the Location to create the CustomJob in.
            #     Format: `projects/{project}/locations/{location}`
            #   @param study [::Google::Cloud::AIPlatform::V1::Study, ::Hash]
            #     Required. The Study configuration used to create the Study.
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Cloud::AIPlatform::V1::Study]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Cloud::AIPlatform::V1::Study]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/ai_platform/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::AIPlatform::V1::VizierService::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::AIPlatform::V1::CreateStudyRequest.new
            #
            #   # Call the create_study method.
            #   result = client.create_study request
            #
            #   # The returned object is of type Google::Cloud::AIPlatform::V1::Study.
            #   p result
            #
            def create_study request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::AIPlatform::V1::CreateStudyRequest

              # 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_study.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::AIPlatform::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.parent
                header_params["parent"] = request.parent
              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.create_study.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.create_study.retry_policy

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

              @vizier_service_stub.call_rpc :create_study, 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 a Study by name.
            #
            # @overload get_study(request, options = nil)
            #   Pass arguments to `get_study` via a request object, either of type
            #   {::Google::Cloud::AIPlatform::V1::GetStudyRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::AIPlatform::V1::GetStudyRequest, ::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_study(name: nil)
            #   Pass arguments to `get_study` 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 Study resource.
            #     Format: `projects/{project}/locations/{location}/studies/{study}`
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Cloud::AIPlatform::V1::Study]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Cloud::AIPlatform::V1::Study]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/ai_platform/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::AIPlatform::V1::VizierService::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::AIPlatform::V1::GetStudyRequest.new
            #
            #   # Call the get_study method.
            #   result = client.get_study request
            #
            #   # The returned object is of type Google::Cloud::AIPlatform::V1::Study.
            #   p result
            #
            def get_study request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::AIPlatform::V1::GetStudyRequest

              # 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_study.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::AIPlatform::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_study.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.get_study.retry_policy

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

              @vizier_service_stub.call_rpc :get_study, 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 all the studies in a region for an associated project.
            #
            # @overload list_studies(request, options = nil)
            #   Pass arguments to `list_studies` via a request object, either of type
            #   {::Google::Cloud::AIPlatform::V1::ListStudiesRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::AIPlatform::V1::ListStudiesRequest, ::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_studies(parent: nil, page_token: nil, page_size: nil)
            #   Pass arguments to `list_studies` 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 parent [::String]
            #     Required. The resource name of the Location to list the Study from.
            #     Format: `projects/{project}/locations/{location}`
            #   @param page_token [::String]
            #     Optional. A page token to request the next page of results.
            #     If unspecified, there are no subsequent pages.
            #   @param page_size [::Integer]
            #     Optional. The maximum number of studies to return per "page" of results.
            #     If unspecified, service will pick an appropriate default.
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Gapic::PagedEnumerable<::Google::Cloud::AIPlatform::V1::Study>]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Gapic::PagedEnumerable<::Google::Cloud::AIPlatform::V1::Study>]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/ai_platform/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::AIPlatform::V1::VizierService::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::AIPlatform::V1::ListStudiesRequest.new
            #
            #   # Call the list_studies method.
            #   result = client.list_studies 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::AIPlatform::V1::Study.
            #     p item
            #   end
            #
            def list_studies request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::AIPlatform::V1::ListStudiesRequest

              # 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_studies.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::AIPlatform::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.parent
                header_params["parent"] = request.parent
              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_studies.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.list_studies.retry_policy

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

              @vizier_service_stub.call_rpc :list_studies, request, options: options do |response, operation|
                response = ::Gapic::PagedEnumerable.new @vizier_service_stub, :list_studies, 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

            ##
            # Deletes a Study.
            #
            # @overload delete_study(request, options = nil)
            #   Pass arguments to `delete_study` via a request object, either of type
            #   {::Google::Cloud::AIPlatform::V1::DeleteStudyRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::AIPlatform::V1::DeleteStudyRequest, ::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_study(name: nil)
            #   Pass arguments to `delete_study` 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 Study resource to be deleted.
            #     Format: `projects/{project}/locations/{location}/studies/{study}`
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Protobuf::Empty]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Protobuf::Empty]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/ai_platform/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::AIPlatform::V1::VizierService::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::AIPlatform::V1::DeleteStudyRequest.new
            #
            #   # Call the delete_study method.
            #   result = client.delete_study request
            #
            #   # The returned object is of type Google::Protobuf::Empty.
            #   p result
            #
            def delete_study request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::AIPlatform::V1::DeleteStudyRequest

              # 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.delete_study.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::AIPlatform::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.delete_study.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.delete_study.retry_policy

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

              @vizier_service_stub.call_rpc :delete_study, 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

            ##
            # Looks a study up using the user-defined display_name field instead of the
            # fully qualified resource name.
            #
            # @overload lookup_study(request, options = nil)
            #   Pass arguments to `lookup_study` via a request object, either of type
            #   {::Google::Cloud::AIPlatform::V1::LookupStudyRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::AIPlatform::V1::LookupStudyRequest, ::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 lookup_study(parent: nil, display_name: nil)
            #   Pass arguments to `lookup_study` 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 parent [::String]
            #     Required. The resource name of the Location to get the Study from.
            #     Format: `projects/{project}/locations/{location}`
            #   @param display_name [::String]
            #     Required. The user-defined display name of the Study
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Cloud::AIPlatform::V1::Study]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Cloud::AIPlatform::V1::Study]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/ai_platform/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::AIPlatform::V1::VizierService::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::AIPlatform::V1::LookupStudyRequest.new
            #
            #   # Call the lookup_study method.
            #   result = client.lookup_study request
            #
            #   # The returned object is of type Google::Cloud::AIPlatform::V1::Study.
            #   p result
            #
            def lookup_study request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::AIPlatform::V1::LookupStudyRequest

              # 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.lookup_study.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::AIPlatform::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.parent
                header_params["parent"] = request.parent
              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.lookup_study.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.lookup_study.retry_policy

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

              @vizier_service_stub.call_rpc :lookup_study, 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

            ##
            # Adds one or more Trials to a Study, with parameter values
            # suggested by Vertex AI Vizier. Returns a long-running
            # operation associated with the generation of Trial suggestions.
            # When this long-running operation succeeds, it will contain
            # a
            # {::Google::Cloud::AIPlatform::V1::SuggestTrialsResponse SuggestTrialsResponse}.
            #
            # @overload suggest_trials(request, options = nil)
            #   Pass arguments to `suggest_trials` via a request object, either of type
            #   {::Google::Cloud::AIPlatform::V1::SuggestTrialsRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::AIPlatform::V1::SuggestTrialsRequest, ::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 suggest_trials(parent: nil, suggestion_count: nil, client_id: nil, contexts: nil)
            #   Pass arguments to `suggest_trials` 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 parent [::String]
            #     Required. The project and location that the Study belongs to.
            #     Format: `projects/{project}/locations/{location}/studies/{study}`
            #   @param suggestion_count [::Integer]
            #     Required. The number of suggestions requested. It must be positive.
            #   @param client_id [::String]
            #     Required. The identifier of the client that is requesting the suggestion.
            #
            #     If multiple SuggestTrialsRequests have the same `client_id`,
            #     the service will return the identical suggested Trial if the Trial is
            #     pending, and provide a new Trial if the last suggested Trial was completed.
            #   @param contexts [::Array<::Google::Cloud::AIPlatform::V1::TrialContext, ::Hash>]
            #     Optional. This allows you to specify the "context" for a Trial; a context
            #     is a slice (a subspace) of the search space.
            #
            #     Typical uses for contexts:
            #     1) You are using Vizier to tune a server for best performance, but there's
            #       a strong weekly cycle.  The context specifies the day-of-week.
            #       This allows Tuesday to generalize from Wednesday without assuming that
            #       everything is identical.
            #     2) Imagine you're optimizing some medical treatment for people.
            #       As they walk in the door, you know certain facts about them
            #       (e.g. sex, weight, height, blood-pressure).  Put that information in the
            #       context, and Vizier will adapt its suggestions to the patient.
            #     3) You want to do a fair A/B test efficiently.  Specify the "A" and "B"
            #       conditions as contexts, and Vizier will generalize between "A" and "B"
            #       conditions.  If they are similar, this will allow Vizier to converge
            #       to the optimum faster than if "A" and "B" were separate Studies.
            #       NOTE: You can also enter contexts as REQUESTED Trials, e.g. via the
            #       CreateTrial() RPC; that's the asynchronous option where you don't need a
            #       close association between contexts and suggestions.
            #
            #     NOTE: All the Parameters you set in a context MUST be defined in the
            #       Study.
            #     NOTE: You must supply 0 or $suggestion_count contexts.
            #       If you don't supply any contexts, Vizier will make suggestions
            #       from the full search space specified in the StudySpec; if you supply
            #       a full set of context, each suggestion will match the corresponding
            #       context.
            #     NOTE: A Context with no features set matches anything, and allows
            #       suggestions from the full search space.
            #     NOTE: Contexts MUST lie within the search space specified in the
            #       StudySpec.  It's an error if they don't.
            #     NOTE: Contexts preferentially match ACTIVE then REQUESTED trials before
            #       new suggestions are generated.
            #     NOTE: Generation of suggestions involves a match between a Context and
            #       (optionally) a REQUESTED trial; if that match is not fully specified, a
            #       suggestion will be geneated in the merged subspace.
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Gapic::Operation]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Gapic::Operation]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/ai_platform/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::AIPlatform::V1::VizierService::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::AIPlatform::V1::SuggestTrialsRequest.new
            #
            #   # Call the suggest_trials method.
            #   result = client.suggest_trials 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 suggest_trials request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::AIPlatform::V1::SuggestTrialsRequest

              # 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.suggest_trials.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::AIPlatform::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.parent
                header_params["parent"] = request.parent
              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.suggest_trials.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.suggest_trials.retry_policy

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

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

            ##
            # Adds a user provided Trial to a Study.
            #
            # @overload create_trial(request, options = nil)
            #   Pass arguments to `create_trial` via a request object, either of type
            #   {::Google::Cloud::AIPlatform::V1::CreateTrialRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::AIPlatform::V1::CreateTrialRequest, ::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_trial(parent: nil, trial: nil)
            #   Pass arguments to `create_trial` 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 parent [::String]
            #     Required. The resource name of the Study to create the Trial in.
            #     Format: `projects/{project}/locations/{location}/studies/{study}`
            #   @param trial [::Google::Cloud::AIPlatform::V1::Trial, ::Hash]
            #     Required. The Trial to create.
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Cloud::AIPlatform::V1::Trial]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Cloud::AIPlatform::V1::Trial]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/ai_platform/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::AIPlatform::V1::VizierService::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::AIPlatform::V1::CreateTrialRequest.new
            #
            #   # Call the create_trial method.
            #   result = client.create_trial request
            #
            #   # The returned object is of type Google::Cloud::AIPlatform::V1::Trial.
            #   p result
            #
            def create_trial request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::AIPlatform::V1::CreateTrialRequest

              # 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_trial.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::AIPlatform::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.parent
                header_params["parent"] = request.parent
              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.create_trial.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.create_trial.retry_policy

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

              @vizier_service_stub.call_rpc :create_trial, 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 a Trial.
            #
            # @overload get_trial(request, options = nil)
            #   Pass arguments to `get_trial` via a request object, either of type
            #   {::Google::Cloud::AIPlatform::V1::GetTrialRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::AIPlatform::V1::GetTrialRequest, ::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_trial(name: nil)
            #   Pass arguments to `get_trial` 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 Trial resource.
            #     Format:
            #     `projects/{project}/locations/{location}/studies/{study}/trials/{trial}`
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Cloud::AIPlatform::V1::Trial]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Cloud::AIPlatform::V1::Trial]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/ai_platform/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::AIPlatform::V1::VizierService::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::AIPlatform::V1::GetTrialRequest.new
            #
            #   # Call the get_trial method.
            #   result = client.get_trial request
            #
            #   # The returned object is of type Google::Cloud::AIPlatform::V1::Trial.
            #   p result
            #
            def get_trial request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::AIPlatform::V1::GetTrialRequest

              # 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_trial.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::AIPlatform::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_trial.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.get_trial.retry_policy

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

              @vizier_service_stub.call_rpc :get_trial, 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 Trials associated with a Study.
            #
            # @overload list_trials(request, options = nil)
            #   Pass arguments to `list_trials` via a request object, either of type
            #   {::Google::Cloud::AIPlatform::V1::ListTrialsRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::AIPlatform::V1::ListTrialsRequest, ::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_trials(parent: nil, page_token: nil, page_size: nil)
            #   Pass arguments to `list_trials` 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 parent [::String]
            #     Required. The resource name of the Study to list the Trial from.
            #     Format: `projects/{project}/locations/{location}/studies/{study}`
            #   @param page_token [::String]
            #     Optional. A page token to request the next page of results.
            #     If unspecified, there are no subsequent pages.
            #   @param page_size [::Integer]
            #     Optional. The number of Trials to retrieve per "page" of results.
            #     If unspecified, the service will pick an appropriate default.
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Gapic::PagedEnumerable<::Google::Cloud::AIPlatform::V1::Trial>]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Gapic::PagedEnumerable<::Google::Cloud::AIPlatform::V1::Trial>]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/ai_platform/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::AIPlatform::V1::VizierService::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::AIPlatform::V1::ListTrialsRequest.new
            #
            #   # Call the list_trials method.
            #   result = client.list_trials 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::AIPlatform::V1::Trial.
            #     p item
            #   end
            #
            def list_trials request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::AIPlatform::V1::ListTrialsRequest

              # 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_trials.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::AIPlatform::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.parent
                header_params["parent"] = request.parent
              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_trials.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.list_trials.retry_policy

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

              @vizier_service_stub.call_rpc :list_trials, request, options: options do |response, operation|
                response = ::Gapic::PagedEnumerable.new @vizier_service_stub, :list_trials, 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

            ##
            # Adds a measurement of the objective metrics to a Trial. This measurement
            # is assumed to have been taken before the Trial is complete.
            #
            # @overload add_trial_measurement(request, options = nil)
            #   Pass arguments to `add_trial_measurement` via a request object, either of type
            #   {::Google::Cloud::AIPlatform::V1::AddTrialMeasurementRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::AIPlatform::V1::AddTrialMeasurementRequest, ::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 add_trial_measurement(trial_name: nil, measurement: nil)
            #   Pass arguments to `add_trial_measurement` 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 trial_name [::String]
            #     Required. The name of the trial to add measurement.
            #     Format:
            #     `projects/{project}/locations/{location}/studies/{study}/trials/{trial}`
            #   @param measurement [::Google::Cloud::AIPlatform::V1::Measurement, ::Hash]
            #     Required. The measurement to be added to a Trial.
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Cloud::AIPlatform::V1::Trial]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Cloud::AIPlatform::V1::Trial]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/ai_platform/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::AIPlatform::V1::VizierService::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::AIPlatform::V1::AddTrialMeasurementRequest.new
            #
            #   # Call the add_trial_measurement method.
            #   result = client.add_trial_measurement request
            #
            #   # The returned object is of type Google::Cloud::AIPlatform::V1::Trial.
            #   p result
            #
            def add_trial_measurement request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::AIPlatform::V1::AddTrialMeasurementRequest

              # 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.add_trial_measurement.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::AIPlatform::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.trial_name
                header_params["trial_name"] = request.trial_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.add_trial_measurement.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.add_trial_measurement.retry_policy

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

              @vizier_service_stub.call_rpc :add_trial_measurement, 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

            ##
            # Marks a Trial as complete.
            #
            # @overload complete_trial(request, options = nil)
            #   Pass arguments to `complete_trial` via a request object, either of type
            #   {::Google::Cloud::AIPlatform::V1::CompleteTrialRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::AIPlatform::V1::CompleteTrialRequest, ::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 complete_trial(name: nil, final_measurement: nil, trial_infeasible: nil, infeasible_reason: nil)
            #   Pass arguments to `complete_trial` 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 Trial's name.
            #     Format:
            #     `projects/{project}/locations/{location}/studies/{study}/trials/{trial}`
            #   @param final_measurement [::Google::Cloud::AIPlatform::V1::Measurement, ::Hash]
            #     Optional. If provided, it will be used as the completed Trial's
            #     final_measurement; Otherwise, the service will auto-select a
            #     previously reported measurement as the final-measurement
            #   @param trial_infeasible [::Boolean]
            #     Optional. True if the Trial cannot be run with the given Parameter, and
            #     final_measurement will be ignored.
            #   @param infeasible_reason [::String]
            #     Optional. A human readable reason why the trial was infeasible. This should
            #     only be provided if `trial_infeasible` is true.
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Cloud::AIPlatform::V1::Trial]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Cloud::AIPlatform::V1::Trial]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/ai_platform/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::AIPlatform::V1::VizierService::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::AIPlatform::V1::CompleteTrialRequest.new
            #
            #   # Call the complete_trial method.
            #   result = client.complete_trial request
            #
            #   # The returned object is of type Google::Cloud::AIPlatform::V1::Trial.
            #   p result
            #
            def complete_trial request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::AIPlatform::V1::CompleteTrialRequest

              # 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.complete_trial.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::AIPlatform::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.complete_trial.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.complete_trial.retry_policy

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

              @vizier_service_stub.call_rpc :complete_trial, 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

            ##
            # Deletes a Trial.
            #
            # @overload delete_trial(request, options = nil)
            #   Pass arguments to `delete_trial` via a request object, either of type
            #   {::Google::Cloud::AIPlatform::V1::DeleteTrialRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::AIPlatform::V1::DeleteTrialRequest, ::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_trial(name: nil)
            #   Pass arguments to `delete_trial` 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 Trial's name.
            #     Format:
            #     `projects/{project}/locations/{location}/studies/{study}/trials/{trial}`
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Protobuf::Empty]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Protobuf::Empty]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/ai_platform/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::AIPlatform::V1::VizierService::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::AIPlatform::V1::DeleteTrialRequest.new
            #
            #   # Call the delete_trial method.
            #   result = client.delete_trial request
            #
            #   # The returned object is of type Google::Protobuf::Empty.
            #   p result
            #
            def delete_trial request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::AIPlatform::V1::DeleteTrialRequest

              # 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.delete_trial.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::AIPlatform::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.delete_trial.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.delete_trial.retry_policy

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

              @vizier_service_stub.call_rpc :delete_trial, 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

            ##
            # Checks  whether a Trial should stop or not. Returns a
            # long-running operation. When the operation is successful,
            # it will contain a
            # {::Google::Cloud::AIPlatform::V1::CheckTrialEarlyStoppingStateResponse CheckTrialEarlyStoppingStateResponse}.
            #
            # @overload check_trial_early_stopping_state(request, options = nil)
            #   Pass arguments to `check_trial_early_stopping_state` via a request object, either of type
            #   {::Google::Cloud::AIPlatform::V1::CheckTrialEarlyStoppingStateRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::AIPlatform::V1::CheckTrialEarlyStoppingStateRequest, ::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 check_trial_early_stopping_state(trial_name: nil)
            #   Pass arguments to `check_trial_early_stopping_state` 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 trial_name [::String]
            #     Required. The Trial's name.
            #     Format:
            #     `projects/{project}/locations/{location}/studies/{study}/trials/{trial}`
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Gapic::Operation]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Gapic::Operation]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/ai_platform/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::AIPlatform::V1::VizierService::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::AIPlatform::V1::CheckTrialEarlyStoppingStateRequest.new
            #
            #   # Call the check_trial_early_stopping_state method.
            #   result = client.check_trial_early_stopping_state 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 check_trial_early_stopping_state request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::AIPlatform::V1::CheckTrialEarlyStoppingStateRequest

              # 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.check_trial_early_stopping_state.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::AIPlatform::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.trial_name
                header_params["trial_name"] = request.trial_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.check_trial_early_stopping_state.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.check_trial_early_stopping_state.retry_policy

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

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

            ##
            # Stops a Trial.
            #
            # @overload stop_trial(request, options = nil)
            #   Pass arguments to `stop_trial` via a request object, either of type
            #   {::Google::Cloud::AIPlatform::V1::StopTrialRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::AIPlatform::V1::StopTrialRequest, ::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 stop_trial(name: nil)
            #   Pass arguments to `stop_trial` 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 Trial's name.
            #     Format:
            #     `projects/{project}/locations/{location}/studies/{study}/trials/{trial}`
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Cloud::AIPlatform::V1::Trial]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Cloud::AIPlatform::V1::Trial]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/ai_platform/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::AIPlatform::V1::VizierService::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::AIPlatform::V1::StopTrialRequest.new
            #
            #   # Call the stop_trial method.
            #   result = client.stop_trial request
            #
            #   # The returned object is of type Google::Cloud::AIPlatform::V1::Trial.
            #   p result
            #
            def stop_trial request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::AIPlatform::V1::StopTrialRequest

              # 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.stop_trial.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::AIPlatform::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.stop_trial.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.stop_trial.retry_policy

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

              @vizier_service_stub.call_rpc :stop_trial, 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 pareto-optimal Trials for multi-objective Study or the
            # optimal Trials for single-objective Study. The definition of
            # pareto-optimal can be checked in wiki page.
            # https://en.wikipedia.org/wiki/Pareto_efficiency
            #
            # @overload list_optimal_trials(request, options = nil)
            #   Pass arguments to `list_optimal_trials` via a request object, either of type
            #   {::Google::Cloud::AIPlatform::V1::ListOptimalTrialsRequest} or an equivalent Hash.
            #
            #   @param request [::Google::Cloud::AIPlatform::V1::ListOptimalTrialsRequest, ::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_optimal_trials(parent: nil)
            #   Pass arguments to `list_optimal_trials` 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 parent [::String]
            #     Required. The name of the Study that the optimal Trial belongs to.
            #
            # @yield [response, operation] Access the result along with the RPC operation
            # @yieldparam response [::Google::Cloud::AIPlatform::V1::ListOptimalTrialsResponse]
            # @yieldparam operation [::GRPC::ActiveCall::Operation]
            #
            # @return [::Google::Cloud::AIPlatform::V1::ListOptimalTrialsResponse]
            #
            # @raise [::Google::Cloud::Error] if the RPC is aborted.
            #
            # @example Basic example
            #   require "google/cloud/ai_platform/v1"
            #
            #   # Create a client object. The client can be reused for multiple calls.
            #   client = Google::Cloud::AIPlatform::V1::VizierService::Client.new
            #
            #   # Create a request. To set request fields, pass in keyword arguments.
            #   request = Google::Cloud::AIPlatform::V1::ListOptimalTrialsRequest.new
            #
            #   # Call the list_optimal_trials method.
            #   result = client.list_optimal_trials request
            #
            #   # The returned object is of type Google::Cloud::AIPlatform::V1::ListOptimalTrialsResponse.
            #   p result
            #
            def list_optimal_trials request, options = nil
              raise ::ArgumentError, "request must be provided" if request.nil?

              request = ::Gapic::Protobuf.coerce request, to: ::Google::Cloud::AIPlatform::V1::ListOptimalTrialsRequest

              # 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_optimal_trials.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::AIPlatform::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.parent
                header_params["parent"] = request.parent
              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_optimal_trials.timeout,
                                     metadata:     metadata,
                                     retry_policy: @config.rpcs.list_optimal_trials.retry_policy

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

              @vizier_service_stub.call_rpc :list_optimal_trials, 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 VizierService API.
            #
            # This class represents the configuration for VizierService,
            # 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::AIPlatform::V1::VizierService::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
            #   # create_study to 20 seconds,
            #   # and all remaining timeouts to 10 seconds.
            #   ::Google::Cloud::AIPlatform::V1::VizierService::Client.configure do |config|
            #     config.timeout = 10.0
            #     config.rpcs.create_study.timeout = 20.0
            #   end
            #
            #   # Apply the above configuration only to a new client.
            #   client = ::Google::Cloud::AIPlatform::V1::VizierService::Client.new do |config|
            #     config.timeout = 10.0
            #     config.rpcs.create_study.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 = "aiplatform.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 VizierService 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 `create_study`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :create_study
                ##
                # RPC-specific configuration for `get_study`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :get_study
                ##
                # RPC-specific configuration for `list_studies`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :list_studies
                ##
                # RPC-specific configuration for `delete_study`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :delete_study
                ##
                # RPC-specific configuration for `lookup_study`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :lookup_study
                ##
                # RPC-specific configuration for `suggest_trials`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :suggest_trials
                ##
                # RPC-specific configuration for `create_trial`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :create_trial
                ##
                # RPC-specific configuration for `get_trial`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :get_trial
                ##
                # RPC-specific configuration for `list_trials`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :list_trials
                ##
                # RPC-specific configuration for `add_trial_measurement`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :add_trial_measurement
                ##
                # RPC-specific configuration for `complete_trial`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :complete_trial
                ##
                # RPC-specific configuration for `delete_trial`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :delete_trial
                ##
                # RPC-specific configuration for `check_trial_early_stopping_state`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :check_trial_early_stopping_state
                ##
                # RPC-specific configuration for `stop_trial`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :stop_trial
                ##
                # RPC-specific configuration for `list_optimal_trials`
                # @return [::Gapic::Config::Method]
                #
                attr_reader :list_optimal_trials

                # @private
                def initialize parent_rpcs = nil
                  create_study_config = parent_rpcs.create_study if parent_rpcs.respond_to? :create_study
                  @create_study = ::Gapic::Config::Method.new create_study_config
                  get_study_config = parent_rpcs.get_study if parent_rpcs.respond_to? :get_study
                  @get_study = ::Gapic::Config::Method.new get_study_config
                  list_studies_config = parent_rpcs.list_studies if parent_rpcs.respond_to? :list_studies
                  @list_studies = ::Gapic::Config::Method.new list_studies_config
                  delete_study_config = parent_rpcs.delete_study if parent_rpcs.respond_to? :delete_study
                  @delete_study = ::Gapic::Config::Method.new delete_study_config
                  lookup_study_config = parent_rpcs.lookup_study if parent_rpcs.respond_to? :lookup_study
                  @lookup_study = ::Gapic::Config::Method.new lookup_study_config
                  suggest_trials_config = parent_rpcs.suggest_trials if parent_rpcs.respond_to? :suggest_trials
                  @suggest_trials = ::Gapic::Config::Method.new suggest_trials_config
                  create_trial_config = parent_rpcs.create_trial if parent_rpcs.respond_to? :create_trial
                  @create_trial = ::Gapic::Config::Method.new create_trial_config
                  get_trial_config = parent_rpcs.get_trial if parent_rpcs.respond_to? :get_trial
                  @get_trial = ::Gapic::Config::Method.new get_trial_config
                  list_trials_config = parent_rpcs.list_trials if parent_rpcs.respond_to? :list_trials
                  @list_trials = ::Gapic::Config::Method.new list_trials_config
                  add_trial_measurement_config = parent_rpcs.add_trial_measurement if parent_rpcs.respond_to? :add_trial_measurement
                  @add_trial_measurement = ::Gapic::Config::Method.new add_trial_measurement_config
                  complete_trial_config = parent_rpcs.complete_trial if parent_rpcs.respond_to? :complete_trial
                  @complete_trial = ::Gapic::Config::Method.new complete_trial_config
                  delete_trial_config = parent_rpcs.delete_trial if parent_rpcs.respond_to? :delete_trial
                  @delete_trial = ::Gapic::Config::Method.new delete_trial_config
                  check_trial_early_stopping_state_config = parent_rpcs.check_trial_early_stopping_state if parent_rpcs.respond_to? :check_trial_early_stopping_state
                  @check_trial_early_stopping_state = ::Gapic::Config::Method.new check_trial_early_stopping_state_config
                  stop_trial_config = parent_rpcs.stop_trial if parent_rpcs.respond_to? :stop_trial
                  @stop_trial = ::Gapic::Config::Method.new stop_trial_config
                  list_optimal_trials_config = parent_rpcs.list_optimal_trials if parent_rpcs.respond_to? :list_optimal_trials
                  @list_optimal_trials = ::Gapic::Config::Method.new list_optimal_trials_config

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