chore: regenerate discoveryengine client (googleapis#29831)

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-discoveryengine/v1/2.0.0/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-discoveryengine</artifactId>
-      <version>v1-rev20251012-2.0.0</version>
+      <version>v1-rev20251017-2.0.0</version>
     </dependency>
   </dependencies>
 </project>
@@ -35,7 +35,7 @@ repositories {
   mavenCentral()
 }
 dependencies {
-  implementation 'com.google.apis:google-api-services-discoveryengine:v1-rev20251012-2.0.0'
+  implementation 'com.google.apis:google-api-services-discoveryengine:v1-rev20251017-2.0.0'
 }
 ```
 

clients/google-api-services-discoveryengine/v1/2.0.0/com/google/api/services/discoveryengine/v1/DiscoveryEngineScopes.java

@@ -29,6 +29,12 @@ public class DiscoveryEngineScopes {
   /** Search your organization's data in the Cloud Search index. */
   public static final String CLOUD_SEARCH_QUERY = "https://www.googleapis.com/auth/cloud_search.query";
 
+  /** View your Agentspace chat history, including uploaded files and generated reports and visualizations, and interact with the Agentspace assistant on your behalf.. */
+  public static final String DISCOVERYENGINE_ASSIST_READWRITE = "https://www.googleapis.com/auth/discoveryengine.assist.readwrite";
+
+  /** View, edit, create, and delete all your data associated with any Discovery Engine API product, such as Agentspace, Vertex AI Search, or NotebookLM Enterprise, including both end user data and administration or configuration data.. */
+  public static final String DISCOVERYENGINE_READWRITE = "https://www.googleapis.com/auth/discoveryengine.readwrite";
+
   /**
    * Returns an unmodifiable set that contains all scopes declared by this class.
    *
@@ -38,6 +44,8 @@ public static java.util.Set<String> all() {
     java.util.Set<String> set = new java.util.HashSet<String>();
     set.add(CLOUD_PLATFORM);
     set.add(CLOUD_SEARCH_QUERY);
+    set.add(DISCOVERYENGINE_ASSIST_READWRITE);
+    set.add(DISCOVERYENGINE_READWRITE);
     return java.util.Collections.unmodifiableSet(set);
   }
 

clients/google-api-services-discoveryengine/v1/2.0.0/com/google/api/services/discoveryengine/v1/model/GoogleCloudDiscoveryengineV1AlertPolicyResourceConfig.java

@@ -30,6 +30,14 @@
 @SuppressWarnings("javadoc")
 public final class GoogleCloudDiscoveryengineV1AssistantGroundedContent extends com.google.api.client.json.GenericJson {
 
+  /**
+   * Source attribution of the generated content. See also https://cloud.google.com/vertex-
+   * ai/generative-ai/docs/learn/overview#citation_check
+   * The value may be {@code null}.
+   */
+  @com.google.api.client.util.Key
+  private GoogleCloudDiscoveryengineV1CitationMetadata citationMetadata;
+
   /**
    * The content.
    * The value may be {@code null}.
@@ -44,6 +52,25 @@ public final class GoogleCloudDiscoveryengineV1AssistantGroundedContent extends
   @com.google.api.client.util.Key
   private GoogleCloudDiscoveryengineV1AssistantGroundedContentTextGroundingMetadata textGroundingMetadata;
 
+  /**
+   * Source attribution of the generated content. See also https://cloud.google.com/vertex-
+   * ai/generative-ai/docs/learn/overview#citation_check
+   * @return value or {@code null} for none
+   */
+  public GoogleCloudDiscoveryengineV1CitationMetadata getCitationMetadata() {
+    return citationMetadata;
+  }
+
+  /**
+   * Source attribution of the generated content. See also https://cloud.google.com/vertex-
+   * ai/generative-ai/docs/learn/overview#citation_check
+   * @param citationMetadata citationMetadata or {@code null} for none
+   */
+  public GoogleCloudDiscoveryengineV1AssistantGroundedContent setCitationMetadata(GoogleCloudDiscoveryengineV1CitationMetadata citationMetadata) {
+    this.citationMetadata = citationMetadata;
+    return this;
+  }
+
   /**
    * The content.
    * @return value or {@code null} for none