chore: regenerate retail client (#27601)

Generated in GitHub action: https://togithub.com/googleapis/googleapis/google-api-java-client-services/actions/workflows/codegen.yaml

Author: yoshi-code-bot

clients/google-api-services-retail/v2alpha/2.0.0/README.md

@@ -22,7 +22,7 @@ Add the following lines to your `pom.xml` file:
     <dependency>
       <groupId>com.google.apis</groupId>
       <artifactId>google-api-services-retail</artifactId>
-      <version>v2alpha-rev20250522-2.0.0</version>
+      <version>v2alpha-rev20250605-2.0.0</version>
     </dependency>
   </dependencies>
 </project>
@@ -35,7 +35,7 @@ repositories {
   mavenCentral()
 }
 dependencies {
-  implementation 'com.google.apis:google-api-services-retail:v2alpha-rev20250522-2.0.0'
+  implementation 'com.google.apis:google-api-services-retail:v2alpha-rev20250605-2.0.0'
 }
 ```
 

clients/google-api-services-retail/v2alpha/2.0.0/com/google/api/services/retail/v2alpha/model/GoogleCloudRetailV2alphaConversationalSearchRequest.java

@@ -89,6 +89,22 @@ public final class GoogleCloudRetailV2alphaConversationalSearchRequest extends c
   @com.google.api.client.util.Key
   private GoogleCloudRetailV2alphaUserInfo userInfo;
 
+  /**
+   * Optional. 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 [Google Cloud
+   * Document](https://cloud.google.com/resource-manager/docs/creating-managing-labels#requirements)
+   * for more details.
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.util.Map<String, java.lang.String> userLabels;
+
   /**
    * Required. 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.
@@ -239,6 +255,41 @@ public GoogleCloudRetailV2alphaConversationalSearchRequest setUserInfo(GoogleClo
     return this;
   }
 
+  /**
+   * Optional. 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 [Google Cloud
+   * Document](https://cloud.google.com/resource-manager/docs/creating-managing-labels#requirements)
+   * for more details.
+   * @return value or {@code null} for none
+   */
+  public java.util.Map<String, java.lang.String> getUserLabels() {
+    return userLabels;
+  }
+
+  /**
+   * Optional. 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 [Google Cloud
+   * Document](https://cloud.google.com/resource-manager/docs/creating-managing-labels#requirements)
+   * for more details.
+   * @param userLabels userLabels or {@code null} for none
+   */
+  public GoogleCloudRetailV2alphaConversationalSearchRequest setUserLabels(java.util.Map<String, java.lang.String> userLabels) {
+    this.userLabels = userLabels;
+    return this;
+  }
+
   /**
    * Required. 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.

clients/google-api-services-retail/v2alpha/2.0.0/com/google/api/services/retail/v2alpha/model/GoogleCloudRetailV2alphaSearchRequest.java

@@ -90,6 +90,13 @@ public final class GoogleCloudRetailV2alphaSearchRequest extends com.google.api.
   @com.google.api.client.util.Key
   private java.lang.String entity;
 
+  /**
+   * Optional. An ID for the experiment group this search belongs to.
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private java.lang.String experimentId;
+
   /**
    * Facet specifications for faceted search. If empty, no facets are returned. A maximum of 200
    * values are allowed. Otherwise, an INVALID_ARGUMENT error is returned.
@@ -458,6 +465,23 @@ public GoogleCloudRetailV2alphaSearchRequest setEntity(java.lang.String entity)
     return this;
   }
 
+  /**
+   * Optional. An ID for the experiment group this search belongs to.
+   * @return value or {@code null} for none
+   */
+  public java.lang.String getExperimentId() {
+    return experimentId;
+  }
+
+  /**
+   * Optional. An ID for the experiment group this search belongs to.
+   * @param experimentId experimentId or {@code null} for none
+   */
+  public GoogleCloudRetailV2alphaSearchRequest setExperimentId(java.lang.String experimentId) {
+    this.experimentId = experimentId;
+    return this;
+  }
+
   /**
    * Facet specifications for faceted search. If empty, no facets are returned. A maximum of 200
    * values are allowed. Otherwise, an INVALID_ARGUMENT error is returned.

clients/google-api-services-retail/v2alpha/2.0.0/pom.xml

@@ -8,8 +8,8 @@
 
   <groupId>com.google.apis</groupId>
   <artifactId>google-api-services-retail</artifactId>
-  <version>v2alpha-rev20250522-2.0.0</version>
-  <name>Vertex AI Search for commerce API v2alpha-rev20250522-2.0.0</name>
+  <version>v2alpha-rev20250605-2.0.0</version>
+  <name>Vertex AI Search for commerce API v2alpha-rev20250605-2.0.0</name>
   <packaging>jar</packaging>
 
   <inceptionYear>2011</inceptionYear>

clients/google-api-services-retail/v2alpha/README.md

@@ -22,7 +22,7 @@ Add the following lines to your `pom.xml` file:
     <dependency>
       <groupId>com.google.apis</groupId>
       <artifactId>google-api-services-retail</artifactId>
-      <version>v2alpha-rev20250522-2.0.0</version>
+      <version>v2alpha-rev20250605-2.0.0</version>
     </dependency>
   </dependencies>
 </project>
@@ -35,7 +35,7 @@ repositories {
   mavenCentral()
 }
 dependencies {
-  implementation 'com.google.apis:google-api-services-retail:v2alpha-rev20250522-2.0.0'
+  implementation 'com.google.apis:google-api-services-retail:v2alpha-rev20250605-2.0.0'
 }
 ```