Merchant API code sample to create a product reviews data source.

### Java

    // Copyright 2023 Google LLC
    //
    // Licensed under the Apache License, Version 2.0 (the "License");
    // you may not use this file except in compliance with the License.
    // You may obtain a copy of the License at
    //
    //     https://www.apache.org/licenses/LICENSE-2.0
    //
    // Unless required by applicable law or agreed to in writing, software
    // distributed under the License is distributed on an "AS IS" BASIS,
    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    // See the License for the specific language governing permissions and
    // limitations under the License.

    package shopping.merchant.samples.datasources.v1;
    import com.google.api.gax.core.FixedCredentialsProvider;
    import com.google.auth.oauth2.GoogleCredentials;
    import com.google.shopping.merchant.datasources.v1.CreateDataSourceRequest;
    import com.google.shopping.merchant.datasources.v1.DataSource;
    import com.google.shopping.merchant.datasources.v1.DataSourcesServiceClient;
    import com.google.shopping.merchant.datasources.v1.DataSourcesServiceSettings;
    import com.google.shopping.merchant.datasources.v1.ProductReviewDataSource;
    import java.io.IOException;
    import shopping.merchant.samples.utils.Authenticator;
    import shopping.merchant.samples.utils.Config;

    /** This class demonstrates how to create a product review data source. */
    public class CreateProductReviewsDataSourceSample {

      private static void createProductReviewsDataSource(String accountId) throws IOException {

        GoogleCredentials credential = new Authenticator().authenticate();

        DataSourcesServiceSettings dataSourcesServiceSettings =
            DataSourcesServiceSettings.newBuilder()
                .setCredentialsProvider(FixedCredentialsProvider.create(credential))
                .build();

        try (DataSourcesServiceClient dataSourcesServiceClient =
            DataSourcesServiceClient.create(dataSourcesServiceSettings)) {
          CreateDataSourceRequest request =
              CreateDataSourceRequest.newBuilder()
                  .setParent(String.format("accounts/%s", accountId))
                  .setDataSource(
                      DataSource.newBuilder()
                          .setDisplayName("Product Reviews Data Source")
                          .setProductReviewDataSource(ProductReviewDataSource.newBuilder().build())
                          .build())
                  .build();

          System.out.println("Creating product reviews data source...");
          DataSource dataSource = dataSourcesServiceClient.createDataSource(request);
          System.out.println(
              String.format("Datasource created successfully: %s", dataSource.getName()));
        } catch (Exception e) {
          System.out.println(e);
          System.exit(1);
        }
      }

      public static void main(String[] args) throws Exception {
        Config config = Config.load();
        createProductReviewsDataSource(config.getAccountId().toString());
      }
    }