Get recommendations

using Google.Cloud.DiscoveryEngine.V1Beta;
using Google.Protobuf.WellKnownTypes;

public sealed partial class GeneratedRecommendationServiceClientSnippets
{
    /// <summary>Snippet for Recommend</summary>
    /// <remarks>
    /// This snippet has been automatically generated and should be regarded as a code template only.
    /// It will require modifications to work:
    /// - It may require correct/in-range values for request initialization.
    /// - It may require specifying regional endpoints when creating the service client as shown in
    ///   https://cloud.google.com/dotnet/docs/reference/help/client-configuration#endpoint.
    /// </remarks>
    public void RecommendRequestObject()
    {
        // Create client
        RecommendationServiceClient recommendationServiceClient = RecommendationServiceClient.Create();
        // Initialize request argument(s)
        RecommendRequest request = new RecommendRequest
        {
            ServingConfigAsServingConfigName = ServingConfigName.FromProjectLocationDataStoreServingConfig("[PROJECT]", "[LOCATION]", "[DATA_STORE]", "[SERVING_CONFIG]"),
            UserEvent = new UserEvent(),
            PageSize = 0,
            Filter = "",
            ValidateOnly = false,
            Params = { { "", new Value() }, },
            UserLabels = { { "", "" }, },
        };
        // Make the request
        RecommendResponse response = recommendationServiceClient.Recommend(request);
    }
}

package main

import (
	"context"

	discoveryengine "cloud.google.com/go/discoveryengine/apiv1beta"
	discoveryenginepb "cloud.google.com/go/discoveryengine/apiv1beta/discoveryenginepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := discoveryengine.NewRecommendationClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &discoveryenginepb.RecommendRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/discoveryengine/apiv1beta/discoveryenginepb#RecommendRequest.
	}
	resp, err := c.Recommend(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

import com.google.cloud.discoveryengine.v1beta.RecommendRequest;
import com.google.cloud.discoveryengine.v1beta.RecommendResponse;
import com.google.cloud.discoveryengine.v1beta.RecommendationServiceClient;
import com.google.cloud.discoveryengine.v1beta.ServingConfigName;
import com.google.cloud.discoveryengine.v1beta.UserEvent;
import com.google.protobuf.Value;
import java.util.HashMap;

public class SyncRecommend {

  public static void main(String[] args) throws Exception {
    syncRecommend();
  }

  public static void syncRecommend() throws Exception {
    // This snippet has been automatically generated and should be regarded as a code template only.
    // It will require modifications to work:
    // - It may require correct/in-range values for request initialization.
    // - It may require specifying regional endpoints when creating the service client as shown in
    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    try (RecommendationServiceClient recommendationServiceClient =
        RecommendationServiceClient.create()) {
      RecommendRequest request =
          RecommendRequest.newBuilder()
              .setServingConfig(
                  ServingConfigName.ofProjectLocationDataStoreServingConfigName(
                          "[PROJECT]", "[LOCATION]", "[DATA_STORE]", "[SERVING_CONFIG]")
                      .toString())
              .setUserEvent(UserEvent.newBuilder().build())
              .setPageSize(883849137)
              .setFilter("filter-1274492040")
              .setValidateOnly(true)
              .putAllParams(new HashMap<String, Value>())
              .putAllUserLabels(new HashMap<String, String>())
              .build();
      RecommendResponse response = recommendationServiceClient.recommend(request);
    }
  }
}

/**
 * This snippet has been automatically generated and should be regarded as a code template only.
 * It will require modifications to work.
 * It may require correct/in-range values for request initialization.
 * TODO(developer): Uncomment these variables before running the sample.
 */
/**
 *  Required. Full resource name of a
 *  ServingConfig google.cloud.discoveryengine.v1beta.ServingConfig:
 *  `projects/* /locations/global/collections/* /engines/* /servingConfigs/*`, or
 *  `projects/* /locations/global/collections/* /dataStores/* /servingConfigs/*`
 *  One default serving config is created along with your recommendation engine
 *  creation. The engine ID is used as the ID of the default serving
 *  config. For example, for Engine
 *  `projects/* /locations/global/collections/* /engines/my-engine`, you can use
 *  `projects/* /locations/global/collections/* /engines/my-engine/servingConfigs/my-engine`
 *  for your
 *  RecommendationService.Recommend google.cloud.discoveryengine.v1beta.RecommendationService.Recommend 
 *  requests.
 */
// const servingConfig = 'abc123'
/**
 *  Required. Context about the user, what they are looking at and what action
 *  they took to trigger the Recommend request. Note that this user event
 *  detail won't be ingested to userEvent logs. Thus, a separate userEvent
 *  write request is required for event logging.
 *  Don't set
 *  UserEvent.user_pseudo_id google.cloud.discoveryengine.v1beta.UserEvent.user_pseudo_id 
 *  or
 *  UserEvent.user_info.user_id google.cloud.discoveryengine.v1beta.UserInfo.user_id 
 *  to the same fixed ID for different users. If you are trying to receive
 *  non-personalized recommendations (not recommended; this can negatively
 *  impact model performance), instead set
 *  UserEvent.user_pseudo_id google.cloud.discoveryengine.v1beta.UserEvent.user_pseudo_id 
 *  to a random unique ID and leave
 *  UserEvent.user_info.user_id google.cloud.discoveryengine.v1beta.UserInfo.user_id 
 *  unset.
 */
// const userEvent = {}
/**
 *  Maximum number of results to return. Set this property
 *  to the number of recommendation results needed. If zero, the service
 *  chooses a reasonable default. The maximum allowed value is 100. Values
 *  above 100 are set to 100.
 */
// const pageSize = 1234
/**
 *  Filter for restricting recommendation results with a length limit of 5,000
 *  characters. Currently, only filter expressions on the `filter_tags`
 *  attribute is supported.
 *  Examples:
 *   * `(filter_tags: ANY("Red", "Blue") OR filter_tags: ANY("Hot", "Cold"))`
 *   * `(filter_tags: ANY("Red", "Blue")) AND NOT (filter_tags: ANY("Green"))`
 *  If `attributeFilteringSyntax` is set to true under the `params` field, then
 *  attribute-based expressions are expected instead of the above described
 *  tag-based syntax. Examples:
 *   * (launguage: ANY("en", "es")) AND NOT (categories: ANY("Movie"))
 *   * (available: true) AND
 *     (launguage: ANY("en", "es")) OR (categories: ANY("Movie"))
 *  If your filter blocks all results, the API returns generic
 *  (unfiltered) popular Documents. If you only want results strictly matching
 *  the filters, set `strictFiltering` to `true` in
 *  RecommendRequest.params google.cloud.discoveryengine.v1beta.RecommendRequest.params 
 *  to receive empty results instead.
 *  Note that the API never returns
 *  Document google.cloud.discoveryengine.v1beta.Document s with
 *  `storageStatus` as `EXPIRED` or `DELETED` regardless of filter choices.
 */
// const filter = 'abc123'
/**
 *  Use validate only mode for this recommendation query. If set to `true`, a
 *  fake model is used that returns arbitrary Document IDs.
 *  Note that the validate only mode should only be used for testing the API,
 *  or if the model is not ready.
 */
// const validateOnly = true
/**
 *  Additional domain specific parameters for the recommendations.
 *  Allowed values:
 *  * `returnDocument`: Boolean. If set to `true`, the associated Document
 *     object is returned in
 *     RecommendResponse.RecommendationResult.document google.cloud.discoveryengine.v1beta.RecommendResponse.RecommendationResult.document.
 *  * `returnScore`: Boolean. If set to true, the recommendation score
 *     corresponding to each returned Document is set in
 *     RecommendResponse.RecommendationResult.metadata google.cloud.discoveryengine.v1beta.RecommendResponse.RecommendationResult.metadata.
 *     The given score indicates the probability of a Document conversion given
 *     the user's context and history.
 *  * `strictFiltering`: Boolean. True by default. If set to `false`, the
 *  service
 *     returns generic (unfiltered) popular Documents instead of empty if
 *     your filter blocks all recommendation results.
 *  * `diversityLevel`: String. Default empty. If set to be non-empty, then
 *     it needs to be one of:
 *      *  `no-diversity`
 *      *  `low-diversity`
 *      *  `medium-diversity`
 *      *  `high-diversity`
 *      *  `auto-diversity`
 *     This gives request-level control and adjusts recommendation results
 *     based on Document category.
 *  * `attributeFilteringSyntax`: Boolean. False by default. If set to true,
 *     the `filter` field is interpreted according to the new,
 *     attribute-based syntax.
 */
// const params = [1,2,3,4]
/**
 *  The user labels applied to a resource must meet the following requirements:
 *  * Each resource can have multiple labels, up to a maximum of 64.
 *  * Each label must be a key-value pair.
 *  * Keys have a minimum length of 1 character and a maximum length of 63
 *    characters and cannot be empty. Values can be empty and have a maximum
 *    length of 63 characters.
 *  * Keys and values can contain only lowercase letters, numeric characters,
 *    underscores, and dashes. All characters must use UTF-8 encoding, and
 *    international characters are allowed.
 *  * The key portion of a label must be unique. However, you can use the same
 *    key with multiple resources.
 *  * Keys must start with a lowercase letter or international character.
 *  See Requirements for
 *  labels (https://cloud.google.com/resource-manager/docs/creating-managing-labels#requirements)
 *  for more details.
 */
// const userLabels = [1,2,3,4]

// Imports the Discoveryengine library
const {RecommendationServiceClient} = require('@google-cloud/discoveryengine').v1beta;

// Instantiates a client
const discoveryengineClient = new RecommendationServiceClient();

async function callRecommend() {
  // Construct request
  const request = {
    servingConfig,
    userEvent,
  };

  // Run request
  const response = await discoveryengineClient.recommend(request);
  console.log(response);
}

callRecommend();

use Google\ApiCore\ApiException;
use Google\Cloud\DiscoveryEngine\V1beta\Client\RecommendationServiceClient;
use Google\Cloud\DiscoveryEngine\V1beta\RecommendRequest;
use Google\Cloud\DiscoveryEngine\V1beta\RecommendResponse;
use Google\Cloud\DiscoveryEngine\V1beta\UserEvent;

/**
 * Makes a recommendation, which requires a contextual user event.
 *
 * @param string $formattedServingConfig Full resource name of a
 *                                       [ServingConfig][google.cloud.discoveryengine.v1beta.ServingConfig]:
 *                                       `projects/*/locations/global/collections/*/engines/*/servingConfigs/*`, or
 *                                       `projects/*/locations/global/collections/*/dataStores/*/servingConfigs/*`
 *
 *                                       One default serving config is created along with your recommendation engine
 *                                       creation. The engine ID is used as the ID of the default serving
 *                                       config. For example, for Engine
 *                                       `projects/*/locations/global/collections/*/engines/my-engine`, you can use
 *                                       `projects/*/locations/global/collections/*/engines/my-engine/servingConfigs/my-engine`
 *                                       for your
 *                                       [RecommendationService.Recommend][google.cloud.discoveryengine.v1beta.RecommendationService.Recommend]
 *                                       requests. Please see
 *                                       {@see RecommendationServiceClient::servingConfigName()} for help formatting this field.
 * @param string $userEventEventType     User event type. Allowed values are:
 *
 *                                       Generic values:
 *
 *                                       * `search`: Search for Documents.
 *                                       * `view-item`: Detailed page view of a Document.
 *                                       * `view-item-list`: View of a panel or ordered list of Documents.
 *                                       * `view-home-page`: View of the home page.
 *                                       * `view-category-page`: View of a category page, e.g. Home > Men > Jeans
 *
 *                                       Retail-related values:
 *
 *                                       * `add-to-cart`: Add an item(s) to cart, e.g. in Retail online shopping
 *                                       * `purchase`: Purchase an item(s)
 *
 *                                       Media-related values:
 *
 *                                       * `media-play`: Start/resume watching a video, playing a song, etc.
 *                                       * `media-complete`: Finished or stopped midway through a video, song, etc.
 * @param string $userEventUserPseudoId  A unique identifier for tracking visitors.
 *
 *                                       For example, this could be implemented with an HTTP cookie, which should be
 *                                       able to uniquely identify a visitor on a single device. This unique
 *                                       identifier should not change if the visitor log in/out of the website.
 *
 *                                       Do not set the field to the same fixed ID for different users. This mixes
 *                                       the event history of those users together, which results in degraded model
 *                                       quality.
 *
 *                                       The field must be a UTF-8 encoded string with a length limit of 128
 *                                       characters. Otherwise, an `INVALID_ARGUMENT` error is returned.
 *
 *                                       The field should not contain PII or user-data. We recommend to use Google
 *                                       Analytics [Client
 *                                       ID](https://developers.google.com/analytics/devguides/collection/analyticsjs/field-reference#clientId)
 *                                       for this field.
 */
function recommend_sample(
    string $formattedServingConfig,
    string $userEventEventType,
    string $userEventUserPseudoId
): void {
    // Create a client.
    $recommendationServiceClient = new RecommendationServiceClient();

    // Prepare the request message.
    $userEvent = (new UserEvent())
        ->setEventType($userEventEventType)
        ->setUserPseudoId($userEventUserPseudoId);
    $request = (new RecommendRequest())
        ->setServingConfig($formattedServingConfig)
        ->setUserEvent($userEvent);

    // Call the API and handle any network failures.
    try {
        /** @var RecommendResponse $response */
        $response = $recommendationServiceClient->recommend($request);
        printf('Response data: %s' . PHP_EOL, $response->serializeToJsonString());
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * Helper to execute the sample.
 *
 * This sample has been automatically generated and should be regarded as a code
 * template only. It will require modifications to work:
 *  - It may require correct/in-range values for request initialization.
 *  - It may require specifying regional endpoints when creating the service client,
 *    please see the apiEndpoint client configuration option for more details.
 */
function callSample(): void
{
    $formattedServingConfig = RecommendationServiceClient::servingConfigName(
        '[PROJECT]',
        '[LOCATION]',
        '[DATA_STORE]',
        '[SERVING_CONFIG]'
    );
    $userEventEventType = '[EVENT_TYPE]';
    $userEventUserPseudoId = '[USER_PSEUDO_ID]';

    recommend_sample($formattedServingConfig, $userEventEventType, $userEventUserPseudoId);
}

# This snippet has been automatically generated and should be regarded as a
# code template only.
# It will require modifications to work:
# - It may require correct/in-range values for request initialization.
# - It may require specifying regional endpoints when creating the service
#   client as shown in:
#   https://googleapis.dev/python/google-api-core/latest/client_options.html
from google.cloud import discoveryengine_v1beta


def sample_recommend():
    # Create a client
    client = discoveryengine_v1beta.RecommendationServiceClient()

    # Initialize request argument(s)
    user_event = discoveryengine_v1beta.UserEvent()
    user_event.event_type = "event_type_value"
    user_event.user_pseudo_id = "user_pseudo_id_value"

    request = discoveryengine_v1beta.RecommendRequest(
        serving_config="serving_config_value",
        user_event=user_event,
    )

    # Make the request
    response = client.recommend(request=request)

    # Handle the response
    print(response)

require "google/cloud/discovery_engine/v1beta"

##
# Snippet for the recommend call in the RecommendationService service
#
# This snippet has been automatically generated and should be regarded as a code
# template only. It will require modifications to work:
# - It may require correct/in-range values for request initialization.
# - It may require specifying regional endpoints when creating the service
# client as shown in https://cloud.google.com/ruby/docs/reference.
#
# This is an auto-generated example demonstrating basic usage of
# Google::Cloud::DiscoveryEngine::V1beta::RecommendationService::Client#recommend.
#
def recommend
  # Create a client object. The client can be reused for multiple calls.
  client = Google::Cloud::DiscoveryEngine::V1beta::RecommendationService::Client.new

  # Create a request. To set request fields, pass in keyword arguments.
  request = Google::Cloud::DiscoveryEngine::V1beta::RecommendRequest.new

  # Call the recommend method.
  result = client.recommend request

  # The returned object is of type Google::Cloud::DiscoveryEngine::V1beta::RecommendResponse.
  p result
end

using Google.Cloud.DiscoveryEngine.V1Beta;
using Google.Protobuf.WellKnownTypes;

public sealed partial class GeneratedRecommendationServiceClientSnippets
{
    /// <summary>Snippet for Recommend</summary>
    /// <remarks>
    /// This snippet has been automatically generated and should be regarded as a code template only.
    /// It will require modifications to work:
    /// - It may require correct/in-range values for request initialization.
    /// - It may require specifying regional endpoints when creating the service client as shown in
    ///   https://cloud.google.com/dotnet/docs/reference/help/client-configuration#endpoint.
    /// </remarks>
    public void RecommendRequestObject()
    {
        // Create client
        RecommendationServiceClient recommendationServiceClient = RecommendationServiceClient.Create();
        // Initialize request argument(s)
        RecommendRequest request = new RecommendRequest
        {
            ServingConfigAsServingConfigName = ServingConfigName.FromProjectLocationDataStoreServingConfig("[PROJECT]", "[LOCATION]", "[DATA_STORE]", "[SERVING_CONFIG]"),
            UserEvent = new UserEvent(),
            PageSize = 0,
            Filter = "",
            ValidateOnly = false,
            Params = { { "", new Value() }, },
            UserLabels = { { "", "" }, },
        };
        // Make the request
        RecommendResponse response = recommendationServiceClient.Recommend(request);
    }
}

package main

import (
	"context"

	discoveryengine "cloud.google.com/go/discoveryengine/apiv1beta"
	discoveryenginepb "cloud.google.com/go/discoveryengine/apiv1beta/discoveryenginepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := discoveryengine.NewRecommendationClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &discoveryenginepb.RecommendRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/discoveryengine/apiv1beta/discoveryenginepb#RecommendRequest.
	}
	resp, err := c.Recommend(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

import com.google.cloud.discoveryengine.v1beta.RecommendRequest;
import com.google.cloud.discoveryengine.v1beta.RecommendResponse;
import com.google.cloud.discoveryengine.v1beta.RecommendationServiceClient;
import com.google.cloud.discoveryengine.v1beta.ServingConfigName;
import com.google.cloud.discoveryengine.v1beta.UserEvent;
import com.google.protobuf.Value;
import java.util.HashMap;

public class SyncRecommend {

  public static void main(String[] args) throws Exception {
    syncRecommend();
  }

  public static void syncRecommend() throws Exception {
    // This snippet has been automatically generated and should be regarded as a code template only.
    // It will require modifications to work:
    // - It may require correct/in-range values for request initialization.
    // - It may require specifying regional endpoints when creating the service client as shown in
    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    try (RecommendationServiceClient recommendationServiceClient =
        RecommendationServiceClient.create()) {
      RecommendRequest request =
          RecommendRequest.newBuilder()
              .setServingConfig(
                  ServingConfigName.ofProjectLocationDataStoreServingConfigName(
                          "[PROJECT]", "[LOCATION]", "[DATA_STORE]", "[SERVING_CONFIG]")
                      .toString())
              .setUserEvent(UserEvent.newBuilder().build())
              .setPageSize(883849137)
              .setFilter("filter-1274492040")
              .setValidateOnly(true)
              .putAllParams(new HashMap<String, Value>())
              .putAllUserLabels(new HashMap<String, String>())
              .build();
      RecommendResponse response = recommendationServiceClient.recommend(request);
    }
  }
}

/**
 * This snippet has been automatically generated and should be regarded as a code template only.
 * It will require modifications to work.
 * It may require correct/in-range values for request initialization.
 * TODO(developer): Uncomment these variables before running the sample.
 */
/**
 *  Required. Full resource name of a
 *  ServingConfig google.cloud.discoveryengine.v1beta.ServingConfig:
 *  `projects/* /locations/global/collections/* /engines/* /servingConfigs/*`, or
 *  `projects/* /locations/global/collections/* /dataStores/* /servingConfigs/*`
 *  One default serving config is created along with your recommendation engine
 *  creation. The engine ID is used as the ID of the default serving
 *  config. For example, for Engine
 *  `projects/* /locations/global/collections/* /engines/my-engine`, you can use
 *  `projects/* /locations/global/collections/* /engines/my-engine/servingConfigs/my-engine`
 *  for your
 *  RecommendationService.Recommend google.cloud.discoveryengine.v1beta.RecommendationService.Recommend 
 *  requests.
 */
// const servingConfig = 'abc123'
/**
 *  Required. Context about the user, what they are looking at and what action
 *  they took to trigger the Recommend request. Note that this user event
 *  detail won't be ingested to userEvent logs. Thus, a separate userEvent
 *  write request is required for event logging.
 *  Don't set
 *  UserEvent.user_pseudo_id google.cloud.discoveryengine.v1beta.UserEvent.user_pseudo_id 
 *  or
 *  UserEvent.user_info.user_id google.cloud.discoveryengine.v1beta.UserInfo.user_id 
 *  to the same fixed ID for different users. If you are trying to receive
 *  non-personalized recommendations (not recommended; this can negatively
 *  impact model performance), instead set
 *  UserEvent.user_pseudo_id google.cloud.discoveryengine.v1beta.UserEvent.user_pseudo_id 
 *  to a random unique ID and leave
 *  UserEvent.user_info.user_id google.cloud.discoveryengine.v1beta.UserInfo.user_id 
 *  unset.
 */
// const userEvent = {}
/**
 *  Maximum number of results to return. Set this property
 *  to the number of recommendation results needed. If zero, the service
 *  chooses a reasonable default. The maximum allowed value is 100. Values
 *  above 100 are set to 100.
 */
// const pageSize = 1234
/**
 *  Filter for restricting recommendation results with a length limit of 5,000
 *  characters. Currently, only filter expressions on the `filter_tags`
 *  attribute is supported.
 *  Examples:
 *   * `(filter_tags: ANY("Red", "Blue") OR filter_tags: ANY("Hot", "Cold"))`
 *   * `(filter_tags: ANY("Red", "Blue")) AND NOT (filter_tags: ANY("Green"))`
 *  If `attributeFilteringSyntax` is set to true under the `params` field, then
 *  attribute-based expressions are expected instead of the above described
 *  tag-based syntax. Examples:
 *   * (launguage: ANY("en", "es")) AND NOT (categories: ANY("Movie"))
 *   * (available: true) AND
 *     (launguage: ANY("en", "es")) OR (categories: ANY("Movie"))
 *  If your filter blocks all results, the API returns generic
 *  (unfiltered) popular Documents. If you only want results strictly matching
 *  the filters, set `strictFiltering` to `true` in
 *  RecommendRequest.params google.cloud.discoveryengine.v1beta.RecommendRequest.params 
 *  to receive empty results instead.
 *  Note that the API never returns
 *  Document google.cloud.discoveryengine.v1beta.Document s with
 *  `storageStatus` as `EXPIRED` or `DELETED` regardless of filter choices.
 */
// const filter = 'abc123'
/**
 *  Use validate only mode for this recommendation query. If set to `true`, a
 *  fake model is used that returns arbitrary Document IDs.
 *  Note that the validate only mode should only be used for testing the API,
 *  or if the model is not ready.
 */
// const validateOnly = true
/**
 *  Additional domain specific parameters for the recommendations.
 *  Allowed values:
 *  * `returnDocument`: Boolean. If set to `true`, the associated Document
 *     object is returned in
 *     RecommendResponse.RecommendationResult.document google.cloud.discoveryengine.v1beta.RecommendResponse.RecommendationResult.document.
 *  * `returnScore`: Boolean. If set to true, the recommendation score
 *     corresponding to each returned Document is set in
 *     RecommendResponse.RecommendationResult.metadata google.cloud.discoveryengine.v1beta.RecommendResponse.RecommendationResult.metadata.
 *     The given score indicates the probability of a Document conversion given
 *     the user's context and history.
 *  * `strictFiltering`: Boolean. True by default. If set to `false`, the
 *  service
 *     returns generic (unfiltered) popular Documents instead of empty if
 *     your filter blocks all recommendation results.
 *  * `diversityLevel`: String. Default empty. If set to be non-empty, then
 *     it needs to be one of:
 *      *  `no-diversity`
 *      *  `low-diversity`
 *      *  `medium-diversity`
 *      *  `high-diversity`
 *      *  `auto-diversity`
 *     This gives request-level control and adjusts recommendation results
 *     based on Document category.
 *  * `attributeFilteringSyntax`: Boolean. False by default. If set to true,
 *     the `filter` field is interpreted according to the new,
 *     attribute-based syntax.
 */
// const params = [1,2,3,4]
/**
 *  The user labels applied to a resource must meet the following requirements:
 *  * Each resource can have multiple labels, up to a maximum of 64.
 *  * Each label must be a key-value pair.
 *  * Keys have a minimum length of 1 character and a maximum length of 63
 *    characters and cannot be empty. Values can be empty and have a maximum
 *    length of 63 characters.
 *  * Keys and values can contain only lowercase letters, numeric characters,
 *    underscores, and dashes. All characters must use UTF-8 encoding, and
 *    international characters are allowed.
 *  * The key portion of a label must be unique. However, you can use the same
 *    key with multiple resources.
 *  * Keys must start with a lowercase letter or international character.
 *  See Requirements for
 *  labels (https://cloud.google.com/resource-manager/docs/creating-managing-labels#requirements)
 *  for more details.
 */
// const userLabels = [1,2,3,4]

// Imports the Discoveryengine library
const {RecommendationServiceClient} = require('@google-cloud/discoveryengine').v1beta;

// Instantiates a client
const discoveryengineClient = new RecommendationServiceClient();

async function callRecommend() {
  // Construct request
  const request = {
    servingConfig,
    userEvent,
  };

  // Run request
  const response = await discoveryengineClient.recommend(request);
  console.log(response);
}

callRecommend();

use Google\ApiCore\ApiException;
use Google\Cloud\DiscoveryEngine\V1beta\Client\RecommendationServiceClient;
use Google\Cloud\DiscoveryEngine\V1beta\RecommendRequest;
use Google\Cloud\DiscoveryEngine\V1beta\RecommendResponse;
use Google\Cloud\DiscoveryEngine\V1beta\UserEvent;

/**
 * Makes a recommendation, which requires a contextual user event.
 *
 * @param string $formattedServingConfig Full resource name of a
 *                                       [ServingConfig][google.cloud.discoveryengine.v1beta.ServingConfig]:
 *                                       `projects/*/locations/global/collections/*/engines/*/servingConfigs/*`, or
 *                                       `projects/*/locations/global/collections/*/dataStores/*/servingConfigs/*`
 *
 *                                       One default serving config is created along with your recommendation engine
 *                                       creation. The engine ID is used as the ID of the default serving
 *                                       config. For example, for Engine
 *                                       `projects/*/locations/global/collections/*/engines/my-engine`, you can use
 *                                       `projects/*/locations/global/collections/*/engines/my-engine/servingConfigs/my-engine`
 *                                       for your
 *                                       [RecommendationService.Recommend][google.cloud.discoveryengine.v1beta.RecommendationService.Recommend]
 *                                       requests. Please see
 *                                       {@see RecommendationServiceClient::servingConfigName()} for help formatting this field.
 * @param string $userEventEventType     User event type. Allowed values are:
 *
 *                                       Generic values:
 *
 *                                       * `search`: Search for Documents.
 *                                       * `view-item`: Detailed page view of a Document.
 *                                       * `view-item-list`: View of a panel or ordered list of Documents.
 *                                       * `view-home-page`: View of the home page.
 *                                       * `view-category-page`: View of a category page, e.g. Home > Men > Jeans
 *
 *                                       Retail-related values:
 *
 *                                       * `add-to-cart`: Add an item(s) to cart, e.g. in Retail online shopping
 *                                       * `purchase`: Purchase an item(s)
 *
 *                                       Media-related values:
 *
 *                                       * `media-play`: Start/resume watching a video, playing a song, etc.
 *                                       * `media-complete`: Finished or stopped midway through a video, song, etc.
 * @param string $userEventUserPseudoId  A unique identifier for tracking visitors.
 *
 *                                       For example, this could be implemented with an HTTP cookie, which should be
 *                                       able to uniquely identify a visitor on a single device. This unique
 *                                       identifier should not change if the visitor log in/out of the website.
 *
 *                                       Do not set the field to the same fixed ID for different users. This mixes
 *                                       the event history of those users together, which results in degraded model
 *                                       quality.
 *
 *                                       The field must be a UTF-8 encoded string with a length limit of 128
 *                                       characters. Otherwise, an `INVALID_ARGUMENT` error is returned.
 *
 *                                       The field should not contain PII or user-data. We recommend to use Google
 *                                       Analytics [Client
 *                                       ID](https://developers.google.com/analytics/devguides/collection/analyticsjs/field-reference#clientId)
 *                                       for this field.
 */
function recommend_sample(
    string $formattedServingConfig,
    string $userEventEventType,
    string $userEventUserPseudoId
): void {
    // Create a client.
    $recommendationServiceClient = new RecommendationServiceClient();

    // Prepare the request message.
    $userEvent = (new UserEvent())
        ->setEventType($userEventEventType)
        ->setUserPseudoId($userEventUserPseudoId);
    $request = (new RecommendRequest())
        ->setServingConfig($formattedServingConfig)
        ->setUserEvent($userEvent);

    // Call the API and handle any network failures.
    try {
        /** @var RecommendResponse $response */
        $response = $recommendationServiceClient->recommend($request);
        printf('Response data: %s' . PHP_EOL, $response->serializeToJsonString());
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * Helper to execute the sample.
 *
 * This sample has been automatically generated and should be regarded as a code
 * template only. It will require modifications to work:
 *  - It may require correct/in-range values for request initialization.
 *  - It may require specifying regional endpoints when creating the service client,
 *    please see the apiEndpoint client configuration option for more details.
 */
function callSample(): void
{
    $formattedServingConfig = RecommendationServiceClient::servingConfigName(
        '[PROJECT]',
        '[LOCATION]',
        '[DATA_STORE]',
        '[SERVING_CONFIG]'
    );
    $userEventEventType = '[EVENT_TYPE]';
    $userEventUserPseudoId = '[USER_PSEUDO_ID]';

    recommend_sample($formattedServingConfig, $userEventEventType, $userEventUserPseudoId);
}

# This snippet has been automatically generated and should be regarded as a
# code template only.
# It will require modifications to work:
# - It may require correct/in-range values for request initialization.
# - It may require specifying regional endpoints when creating the service
#   client as shown in:
#   https://googleapis.dev/python/google-api-core/latest/client_options.html
from google.cloud import discoveryengine_v1beta


def sample_recommend():
    # Create a client
    client = discoveryengine_v1beta.RecommendationServiceClient()

    # Initialize request argument(s)
    user_event = discoveryengine_v1beta.UserEvent()
    user_event.event_type = "event_type_value"
    user_event.user_pseudo_id = "user_pseudo_id_value"

    request = discoveryengine_v1beta.RecommendRequest(
        serving_config="serving_config_value",
        user_event=user_event,
    )

    # Make the request
    response = client.recommend(request=request)

    # Handle the response
    print(response)

require "google/cloud/discovery_engine/v1beta"

##
# Snippet for the recommend call in the RecommendationService service
#
# This snippet has been automatically generated and should be regarded as a code
# template only. It will require modifications to work:
# - It may require correct/in-range values for request initialization.
# - It may require specifying regional endpoints when creating the service
# client as shown in https://cloud.google.com/ruby/docs/reference.
#
# This is an auto-generated example demonstrating basic usage of
# Google::Cloud::DiscoveryEngine::V1beta::RecommendationService::Client#recommend.
#
def recommend
  # Create a client object. The client can be reused for multiple calls.
  client = Google::Cloud::DiscoveryEngine::V1beta::RecommendationService::Client.new

  # Create a request. To set request fields, pass in keyword arguments.
  request = Google::Cloud::DiscoveryEngine::V1beta::RecommendRequest.new

  # Call the recommend method.
  result = client.recommend request

  # The returned object is of type Google::Cloud::DiscoveryEngine::V1beta::RecommendResponse.
  p result
end

using Google.Cloud.DiscoveryEngine.V1Beta;
using Google.Protobuf.WellKnownTypes;

public sealed partial class GeneratedRecommendationServiceClientSnippets
{
    /// <summary>Snippet for Recommend</summary>
    /// <remarks>
    /// This snippet has been automatically generated and should be regarded as a code template only.
    /// It will require modifications to work:
    /// - It may require correct/in-range values for request initialization.
    /// - It may require specifying regional endpoints when creating the service client as shown in
    ///   https://cloud.google.com/dotnet/docs/reference/help/client-configuration#endpoint.
    /// </remarks>
    public void RecommendRequestObject()
    {
        // Create client
        RecommendationServiceClient recommendationServiceClient = RecommendationServiceClient.Create();
        // Initialize request argument(s)
        RecommendRequest request = new RecommendRequest
        {
            ServingConfigAsServingConfigName = ServingConfigName.FromProjectLocationDataStoreServingConfig("[PROJECT]", "[LOCATION]", "[DATA_STORE]", "[SERVING_CONFIG]"),
            UserEvent = new UserEvent(),
            PageSize = 0,
            Filter = "",
            ValidateOnly = false,
            Params = { { "", new Value() }, },
            UserLabels = { { "", "" }, },
        };
        // Make the request
        RecommendResponse response = recommendationServiceClient.Recommend(request);
    }
}

package main

import (
	"context"

	discoveryengine "cloud.google.com/go/discoveryengine/apiv1beta"
	discoveryenginepb "cloud.google.com/go/discoveryengine/apiv1beta/discoveryenginepb"
)

func main() {
	ctx := context.Background()
	// This snippet has been automatically generated and should be regarded as a code template only.
	// It will require modifications to work:
	// - It may require correct/in-range values for request initialization.
	// - It may require specifying regional endpoints when creating the service client as shown in:
	//   https://pkg.go.dev/cloud.google.com/go#hdr-Client_Options
	c, err := discoveryengine.NewRecommendationClient(ctx)
	if err != nil {
		// TODO: Handle error.
	}
	defer c.Close()

	req := &discoveryenginepb.RecommendRequest{
		// TODO: Fill request struct fields.
		// See https://pkg.go.dev/cloud.google.com/go/discoveryengine/apiv1beta/discoveryenginepb#RecommendRequest.
	}
	resp, err := c.Recommend(ctx, req)
	if err != nil {
		// TODO: Handle error.
	}
	// TODO: Use resp.
	_ = resp
}

import com.google.cloud.discoveryengine.v1beta.RecommendRequest;
import com.google.cloud.discoveryengine.v1beta.RecommendResponse;
import com.google.cloud.discoveryengine.v1beta.RecommendationServiceClient;
import com.google.cloud.discoveryengine.v1beta.ServingConfigName;
import com.google.cloud.discoveryengine.v1beta.UserEvent;
import com.google.protobuf.Value;
import java.util.HashMap;

public class SyncRecommend {

  public static void main(String[] args) throws Exception {
    syncRecommend();
  }

  public static void syncRecommend() throws Exception {
    // This snippet has been automatically generated and should be regarded as a code template only.
    // It will require modifications to work:
    // - It may require correct/in-range values for request initialization.
    // - It may require specifying regional endpoints when creating the service client as shown in
    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
    try (RecommendationServiceClient recommendationServiceClient =
        RecommendationServiceClient.create()) {
      RecommendRequest request =
          RecommendRequest.newBuilder()
              .setServingConfig(
                  ServingConfigName.ofProjectLocationDataStoreServingConfigName(
                          "[PROJECT]", "[LOCATION]", "[DATA_STORE]", "[SERVING_CONFIG]")
                      .toString())
              .setUserEvent(UserEvent.newBuilder().build())
              .setPageSize(883849137)
              .setFilter("filter-1274492040")
              .setValidateOnly(true)
              .putAllParams(new HashMap<String, Value>())
              .putAllUserLabels(new HashMap<String, String>())
              .build();
      RecommendResponse response = recommendationServiceClient.recommend(request);
    }
  }
}

/**
 * This snippet has been automatically generated and should be regarded as a code template only.
 * It will require modifications to work.
 * It may require correct/in-range values for request initialization.
 * TODO(developer): Uncomment these variables before running the sample.
 */
/**
 *  Required. Full resource name of a
 *  ServingConfig google.cloud.discoveryengine.v1beta.ServingConfig:
 *  `projects/* /locations/global/collections/* /engines/* /servingConfigs/*`, or
 *  `projects/* /locations/global/collections/* /dataStores/* /servingConfigs/*`
 *  One default serving config is created along with your recommendation engine
 *  creation. The engine ID is used as the ID of the default serving
 *  config. For example, for Engine
 *  `projects/* /locations/global/collections/* /engines/my-engine`, you can use
 *  `projects/* /locations/global/collections/* /engines/my-engine/servingConfigs/my-engine`
 *  for your
 *  RecommendationService.Recommend google.cloud.discoveryengine.v1beta.RecommendationService.Recommend 
 *  requests.
 */
// const servingConfig = 'abc123'
/**
 *  Required. Context about the user, what they are looking at and what action
 *  they took to trigger the Recommend request. Note that this user event
 *  detail won't be ingested to userEvent logs. Thus, a separate userEvent
 *  write request is required for event logging.
 *  Don't set
 *  UserEvent.user_pseudo_id google.cloud.discoveryengine.v1beta.UserEvent.user_pseudo_id 
 *  or
 *  UserEvent.user_info.user_id google.cloud.discoveryengine.v1beta.UserInfo.user_id 
 *  to the same fixed ID for different users. If you are trying to receive
 *  non-personalized recommendations (not recommended; this can negatively
 *  impact model performance), instead set
 *  UserEvent.user_pseudo_id google.cloud.discoveryengine.v1beta.UserEvent.user_pseudo_id 
 *  to a random unique ID and leave
 *  UserEvent.user_info.user_id google.cloud.discoveryengine.v1beta.UserInfo.user_id 
 *  unset.
 */
// const userEvent = {}
/**
 *  Maximum number of results to return. Set this property
 *  to the number of recommendation results needed. If zero, the service
 *  chooses a reasonable default. The maximum allowed value is 100. Values
 *  above 100 are set to 100.
 */
// const pageSize = 1234
/**
 *  Filter for restricting recommendation results with a length limit of 5,000
 *  characters. Currently, only filter expressions on the `filter_tags`
 *  attribute is supported.
 *  Examples:
 *   * `(filter_tags: ANY("Red", "Blue") OR filter_tags: ANY("Hot", "Cold"))`
 *   * `(filter_tags: ANY("Red", "Blue")) AND NOT (filter_tags: ANY("Green"))`
 *  If `attributeFilteringSyntax` is set to true under the `params` field, then
 *  attribute-based expressions are expected instead of the above described
 *  tag-based syntax. Examples:
 *   * (launguage: ANY("en", "es")) AND NOT (categories: ANY("Movie"))
 *   * (available: true) AND
 *     (launguage: ANY("en", "es")) OR (categories: ANY("Movie"))
 *  If your filter blocks all results, the API returns generic
 *  (unfiltered) popular Documents. If you only want results strictly matching
 *  the filters, set `strictFiltering` to `true` in
 *  RecommendRequest.params google.cloud.discoveryengine.v1beta.RecommendRequest.params 
 *  to receive empty results instead.
 *  Note that the API never returns
 *  Document google.cloud.discoveryengine.v1beta.Document s with
 *  `storageStatus` as `EXPIRED` or `DELETED` regardless of filter choices.
 */
// const filter = 'abc123'
/**
 *  Use validate only mode for this recommendation query. If set to `true`, a
 *  fake model is used that returns arbitrary Document IDs.
 *  Note that the validate only mode should only be used for testing the API,
 *  or if the model is not ready.
 */
// const validateOnly = true
/**
 *  Additional domain specific parameters for the recommendations.
 *  Allowed values:
 *  * `returnDocument`: Boolean. If set to `true`, the associated Document
 *     object is returned in
 *     RecommendResponse.RecommendationResult.document google.cloud.discoveryengine.v1beta.RecommendResponse.RecommendationResult.document.
 *  * `returnScore`: Boolean. If set to true, the recommendation score
 *     corresponding to each returned Document is set in
 *     RecommendResponse.RecommendationResult.metadata google.cloud.discoveryengine.v1beta.RecommendResponse.RecommendationResult.metadata.
 *     The given score indicates the probability of a Document conversion given
 *     the user's context and history.
 *  * `strictFiltering`: Boolean. True by default. If set to `false`, the
 *  service
 *     returns generic (unfiltered) popular Documents instead of empty if
 *     your filter blocks all recommendation results.
 *  * `diversityLevel`: String. Default empty. If set to be non-empty, then
 *     it needs to be one of:
 *      *  `no-diversity`
 *      *  `low-diversity`
 *      *  `medium-diversity`
 *      *  `high-diversity`
 *      *  `auto-diversity`
 *     This gives request-level control and adjusts recommendation results
 *     based on Document category.
 *  * `attributeFilteringSyntax`: Boolean. False by default. If set to true,
 *     the `filter` field is interpreted according to the new,
 *     attribute-based syntax.
 */
// const params = [1,2,3,4]
/**
 *  The user labels applied to a resource must meet the following requirements:
 *  * Each resource can have multiple labels, up to a maximum of 64.
 *  * Each label must be a key-value pair.
 *  * Keys have a minimum length of 1 character and a maximum length of 63
 *    characters and cannot be empty. Values can be empty and have a maximum
 *    length of 63 characters.
 *  * Keys and values can contain only lowercase letters, numeric characters,
 *    underscores, and dashes. All characters must use UTF-8 encoding, and
 *    international characters are allowed.
 *  * The key portion of a label must be unique. However, you can use the same
 *    key with multiple resources.
 *  * Keys must start with a lowercase letter or international character.
 *  See Requirements for
 *  labels (https://cloud.google.com/resource-manager/docs/creating-managing-labels#requirements)
 *  for more details.
 */
// const userLabels = [1,2,3,4]

// Imports the Discoveryengine library
const {RecommendationServiceClient} = require('@google-cloud/discoveryengine').v1beta;

// Instantiates a client
const discoveryengineClient = new RecommendationServiceClient();

async function callRecommend() {
  // Construct request
  const request = {
    servingConfig,
    userEvent,
  };

  // Run request
  const response = await discoveryengineClient.recommend(request);
  console.log(response);
}

callRecommend();

use Google\ApiCore\ApiException;
use Google\Cloud\DiscoveryEngine\V1beta\Client\RecommendationServiceClient;
use Google\Cloud\DiscoveryEngine\V1beta\RecommendRequest;
use Google\Cloud\DiscoveryEngine\V1beta\RecommendResponse;
use Google\Cloud\DiscoveryEngine\V1beta\UserEvent;

/**
 * Makes a recommendation, which requires a contextual user event.
 *
 * @param string $formattedServingConfig Full resource name of a
 *                                       [ServingConfig][google.cloud.discoveryengine.v1beta.ServingConfig]:
 *                                       `projects/*/locations/global/collections/*/engines/*/servingConfigs/*`, or
 *                                       `projects/*/locations/global/collections/*/dataStores/*/servingConfigs/*`
 *
 *                                       One default serving config is created along with your recommendation engine
 *                                       creation. The engine ID is used as the ID of the default serving
 *                                       config. For example, for Engine
 *                                       `projects/*/locations/global/collections/*/engines/my-engine`, you can use
 *                                       `projects/*/locations/global/collections/*/engines/my-engine/servingConfigs/my-engine`
 *                                       for your
 *                                       [RecommendationService.Recommend][google.cloud.discoveryengine.v1beta.RecommendationService.Recommend]
 *                                       requests. Please see
 *                                       {@see RecommendationServiceClient::servingConfigName()} for help formatting this field.
 * @param string $userEventEventType     User event type. Allowed values are:
 *
 *                                       Generic values:
 *
 *                                       * `search`: Search for Documents.
 *                                       * `view-item`: Detailed page view of a Document.
 *                                       * `view-item-list`: View of a panel or ordered list of Documents.
 *                                       * `view-home-page`: View of the home page.
 *                                       * `view-category-page`: View of a category page, e.g. Home > Men > Jeans
 *
 *                                       Retail-related values:
 *
 *                                       * `add-to-cart`: Add an item(s) to cart, e.g. in Retail online shopping
 *                                       * `purchase`: Purchase an item(s)
 *
 *                                       Media-related values:
 *
 *                                       * `media-play`: Start/resume watching a video, playing a song, etc.
 *                                       * `media-complete`: Finished or stopped midway through a video, song, etc.
 * @param string $userEventUserPseudoId  A unique identifier for tracking visitors.
 *
 *                                       For example, this could be implemented with an HTTP cookie, which should be
 *                                       able to uniquely identify a visitor on a single device. This unique
 *                                       identifier should not change if the visitor log in/out of the website.
 *
 *                                       Do not set the field to the same fixed ID for different users. This mixes
 *                                       the event history of those users together, which results in degraded model
 *                                       quality.
 *
 *                                       The field must be a UTF-8 encoded string with a length limit of 128
 *                                       characters. Otherwise, an `INVALID_ARGUMENT` error is returned.
 *
 *                                       The field should not contain PII or user-data. We recommend to use Google
 *                                       Analytics [Client
 *                                       ID](https://developers.google.com/analytics/devguides/collection/analyticsjs/field-reference#clientId)
 *                                       for this field.
 */
function recommend_sample(
    string $formattedServingConfig,
    string $userEventEventType,
    string $userEventUserPseudoId
): void {
    // Create a client.
    $recommendationServiceClient = new RecommendationServiceClient();

    // Prepare the request message.
    $userEvent = (new UserEvent())
        ->setEventType($userEventEventType)
        ->setUserPseudoId($userEventUserPseudoId);
    $request = (new RecommendRequest())
        ->setServingConfig($formattedServingConfig)
        ->setUserEvent($userEvent);

    // Call the API and handle any network failures.
    try {
        /** @var RecommendResponse $response */
        $response = $recommendationServiceClient->recommend($request);
        printf('Response data: %s' . PHP_EOL, $response->serializeToJsonString());
    } catch (ApiException $ex) {
        printf('Call failed with message: %s' . PHP_EOL, $ex->getMessage());
    }
}

/**
 * Helper to execute the sample.
 *
 * This sample has been automatically generated and should be regarded as a code
 * template only. It will require modifications to work:
 *  - It may require correct/in-range values for request initialization.
 *  - It may require specifying regional endpoints when creating the service client,
 *    please see the apiEndpoint client configuration option for more details.
 */
function callSample(): void
{
    $formattedServingConfig = RecommendationServiceClient::servingConfigName(
        '[PROJECT]',
        '[LOCATION]',
        '[DATA_STORE]',
        '[SERVING_CONFIG]'
    );
    $userEventEventType = '[EVENT_TYPE]';
    $userEventUserPseudoId = '[USER_PSEUDO_ID]';

    recommend_sample($formattedServingConfig, $userEventEventType, $userEventUserPseudoId);
}

# This snippet has been automatically generated and should be regarded as a
# code template only.
# It will require modifications to work:
# - It may require correct/in-range values for request initialization.
# - It may require specifying regional endpoints when creating the service
#   client as shown in:
#   https://googleapis.dev/python/google-api-core/latest/client_options.html
from google.cloud import discoveryengine_v1beta


def sample_recommend():
    # Create a client
    client = discoveryengine_v1beta.RecommendationServiceClient()

    # Initialize request argument(s)
    user_event = discoveryengine_v1beta.UserEvent()
    user_event.event_type = "event_type_value"
    user_event.user_pseudo_id = "user_pseudo_id_value"

    request = discoveryengine_v1beta.RecommendRequest(
        serving_config="serving_config_value",
        user_event=user_event,
    )

    # Make the request
    response = client.recommend(request=request)

    # Handle the response
    print(response)

require "google/cloud/discovery_engine/v1beta"

##
# Snippet for the recommend call in the RecommendationService service
#
# This snippet has been automatically generated and should be regarded as a code
# template only. It will require modifications to work:
# - It may require correct/in-range values for request initialization.
# - It may require specifying regional endpoints when creating the service
# client as shown in https://cloud.google.com/ruby/docs/reference.
#
# This is an auto-generated example demonstrating basic usage of
# Google::Cloud::DiscoveryEngine::V1beta::RecommendationService::Client#recommend.
#
def recommend
  # Create a client object. The client can be reused for multiple calls.
  client = Google::Cloud::DiscoveryEngine::V1beta::RecommendationService::Client.new

  # Create a request. To set request fields, pass in keyword arguments.
  request = Google::Cloud::DiscoveryEngine::V1beta::RecommendRequest.new

  # Call the recommend method.
  result = client.recommend request

  # The returned object is of type Google::Cloud::DiscoveryEngine::V1beta::RecommendResponse.
  p result
end