diff --git a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/DocumentsClient.java b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/DocumentsClient.java
index 9e420e4e8..4ca4a49ad 100644
--- a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/DocumentsClient.java
+++ b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/DocumentsClient.java
@@ -234,6 +234,7 @@ public final ListDocumentsPagedResponse listDocuments(String parent) {
    *                   .toString())
    *           .setPageSize(883849137)
    *           .setPageToken("pageToken873572522")
+   *           .setFilter("filter-1274492040")
    *           .build();
    *   for (Document element : documentsClient.listDocuments(request).iterateAll()) {
    *     // doThingsWith(element);
@@ -263,6 +264,7 @@ public final ListDocumentsPagedResponse listDocuments(ListDocumentsRequest reque
    *                   .toString())
    *           .setPageSize(883849137)
    *           .setPageToken("pageToken873572522")
+   *           .setFilter("filter-1274492040")
    *           .build();
    *   ApiFuture<Document> future = documentsClient.listDocumentsPagedCallable().futureCall(request);
    *   // Do something.
@@ -292,6 +294,7 @@ public final ListDocumentsPagedResponse listDocuments(ListDocumentsRequest reque
    *                   .toString())
    *           .setPageSize(883849137)
    *           .setPageToken("pageToken873572522")
+   *           .setFilter("filter-1274492040")
    *           .build();
    *   while (true) {
    *     ListDocumentsResponse response = documentsClient.listDocumentsCallable().call(request);
@@ -1025,6 +1028,8 @@ public final OperationFuture<Document, KnowledgeOperationMetadata> reloadDocumen
    *               DocumentName.ofProjectKnowledgeBaseDocumentName(
    *                       "[PROJECT]", "[KNOWLEDGE_BASE]", "[DOCUMENT]")
    *                   .toString())
+   *           .setImportGcsCustomMetadata(true)
+   *           .setSmartMessagingPartialUpdate(true)
    *           .build();
    *   Document response = documentsClient.reloadDocumentAsync(request).get();
    * }
@@ -1066,6 +1071,8 @@ public final OperationFuture<Document, KnowledgeOperationMetadata> reloadDocumen
    *               DocumentName.ofProjectKnowledgeBaseDocumentName(
    *                       "[PROJECT]", "[KNOWLEDGE_BASE]", "[DOCUMENT]")
    *                   .toString())
+   *           .setImportGcsCustomMetadata(true)
+   *           .setSmartMessagingPartialUpdate(true)
    *           .build();
    *   OperationFuture<Document, KnowledgeOperationMetadata> future =
    *       documentsClient.reloadDocumentOperationCallable().futureCall(request);
@@ -1107,6 +1114,8 @@ public final OperationFuture<Document, KnowledgeOperationMetadata> reloadDocumen
    *               DocumentName.ofProjectKnowledgeBaseDocumentName(
    *                       "[PROJECT]", "[KNOWLEDGE_BASE]", "[DOCUMENT]")
    *                   .toString())
+   *           .setImportGcsCustomMetadata(true)
+   *           .setSmartMessagingPartialUpdate(true)
    *           .build();
    *   ApiFuture<Operation> future = documentsClient.reloadDocumentCallable().futureCall(request);
    *   // Do something.
@@ -1118,6 +1127,115 @@ public final UnaryCallable<ReloadDocumentRequest, Operation> reloadDocumentCalla
     return stub.reloadDocumentCallable();
   }
 
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Exports a smart messaging candidate document into the specified destination.
+   *
+   * <p>This method is a [long-running
+   * operation](https://cloud.google.com/dialogflow/cx/docs/how/long-running-operation). The
+   * returned `Operation` type has the following method-specific fields:
+   *
+   * <p>- `metadata`:
+   * [KnowledgeOperationMetadata][google.cloud.dialogflow.v2.KnowledgeOperationMetadata] -
+   * `response`: [Document][google.cloud.dialogflow.v2.Document]
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * try (DocumentsClient documentsClient = DocumentsClient.create()) {
+   *   ExportDocumentRequest request =
+   *       ExportDocumentRequest.newBuilder()
+   *           .setName(
+   *               DocumentName.ofProjectKnowledgeBaseDocumentName(
+   *                       "[PROJECT]", "[KNOWLEDGE_BASE]", "[DOCUMENT]")
+   *                   .toString())
+   *           .setExportFullContent(true)
+   *           .setSmartMessagingPartialUpdate(true)
+   *           .build();
+   *   Document response = documentsClient.exportDocumentAsync(request).get();
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final OperationFuture<Document, KnowledgeOperationMetadata> exportDocumentAsync(
+      ExportDocumentRequest request) {
+    return exportDocumentOperationCallable().futureCall(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Exports a smart messaging candidate document into the specified destination.
+   *
+   * <p>This method is a [long-running
+   * operation](https://cloud.google.com/dialogflow/cx/docs/how/long-running-operation). The
+   * returned `Operation` type has the following method-specific fields:
+   *
+   * <p>- `metadata`:
+   * [KnowledgeOperationMetadata][google.cloud.dialogflow.v2.KnowledgeOperationMetadata] -
+   * `response`: [Document][google.cloud.dialogflow.v2.Document]
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * try (DocumentsClient documentsClient = DocumentsClient.create()) {
+   *   ExportDocumentRequest request =
+   *       ExportDocumentRequest.newBuilder()
+   *           .setName(
+   *               DocumentName.ofProjectKnowledgeBaseDocumentName(
+   *                       "[PROJECT]", "[KNOWLEDGE_BASE]", "[DOCUMENT]")
+   *                   .toString())
+   *           .setExportFullContent(true)
+   *           .setSmartMessagingPartialUpdate(true)
+   *           .build();
+   *   OperationFuture<Document, KnowledgeOperationMetadata> future =
+   *       documentsClient.exportDocumentOperationCallable().futureCall(request);
+   *   // Do something.
+   *   Document response = future.get();
+   * }
+   * }</pre>
+   */
+  public final OperationCallable<ExportDocumentRequest, Document, KnowledgeOperationMetadata>
+      exportDocumentOperationCallable() {
+    return stub.exportDocumentOperationCallable();
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Exports a smart messaging candidate document into the specified destination.
+   *
+   * <p>This method is a [long-running
+   * operation](https://cloud.google.com/dialogflow/cx/docs/how/long-running-operation). The
+   * returned `Operation` type has the following method-specific fields:
+   *
+   * <p>- `metadata`:
+   * [KnowledgeOperationMetadata][google.cloud.dialogflow.v2.KnowledgeOperationMetadata] -
+   * `response`: [Document][google.cloud.dialogflow.v2.Document]
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * try (DocumentsClient documentsClient = DocumentsClient.create()) {
+   *   ExportDocumentRequest request =
+   *       ExportDocumentRequest.newBuilder()
+   *           .setName(
+   *               DocumentName.ofProjectKnowledgeBaseDocumentName(
+   *                       "[PROJECT]", "[KNOWLEDGE_BASE]", "[DOCUMENT]")
+   *                   .toString())
+   *           .setExportFullContent(true)
+   *           .setSmartMessagingPartialUpdate(true)
+   *           .build();
+   *   ApiFuture<Operation> future = documentsClient.exportDocumentCallable().futureCall(request);
+   *   // Do something.
+   *   Operation response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<ExportDocumentRequest, Operation> exportDocumentCallable() {
+    return stub.exportDocumentCallable();
+  }
+
   @Override
   public final void close() {
     stub.close();
diff --git a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/DocumentsSettings.java b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/DocumentsSettings.java
index 772ff3d59..88ba1e166 100644
--- a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/DocumentsSettings.java
+++ b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/DocumentsSettings.java
@@ -126,6 +126,17 @@ public UnaryCallSettings<ReloadDocumentRequest, Operation> reloadDocumentSetting
     return ((DocumentsStubSettings) getStubSettings()).reloadDocumentOperationSettings();
   }
 
+  /** Returns the object with the settings used for calls to exportDocument. */
+  public UnaryCallSettings<ExportDocumentRequest, Operation> exportDocumentSettings() {
+    return ((DocumentsStubSettings) getStubSettings()).exportDocumentSettings();
+  }
+
+  /** Returns the object with the settings used for calls to exportDocument. */
+  public OperationCallSettings<ExportDocumentRequest, Document, KnowledgeOperationMetadata>
+      exportDocumentOperationSettings() {
+    return ((DocumentsStubSettings) getStubSettings()).exportDocumentOperationSettings();
+  }
+
   public static final DocumentsSettings create(DocumentsStubSettings stub) throws IOException {
     return new DocumentsSettings.Builder(stub.toBuilder()).build();
   }
@@ -281,6 +292,18 @@ public UnaryCallSettings.Builder<ReloadDocumentRequest, Operation> reloadDocumen
       return getStubSettingsBuilder().reloadDocumentOperationSettings();
     }
 
+    /** Returns the builder for the settings used for calls to exportDocument. */
+    public UnaryCallSettings.Builder<ExportDocumentRequest, Operation> exportDocumentSettings() {
+      return getStubSettingsBuilder().exportDocumentSettings();
+    }
+
+    /** Returns the builder for the settings used for calls to exportDocument. */
+    public OperationCallSettings.Builder<
+            ExportDocumentRequest, Document, KnowledgeOperationMetadata>
+        exportDocumentOperationSettings() {
+      return getStubSettingsBuilder().exportDocumentOperationSettings();
+    }
+
     @Override
     public DocumentsSettings build() throws IOException {
       return new DocumentsSettings(this);
diff --git a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBasesClient.java b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBasesClient.java
index f57164aa9..19890d86e 100644
--- a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBasesClient.java
+++ b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBasesClient.java
@@ -242,6 +242,7 @@ public final ListKnowledgeBasesPagedResponse listKnowledgeBases(String parent) {
    *           .setParent(ProjectName.of("[PROJECT]").toString())
    *           .setPageSize(883849137)
    *           .setPageToken("pageToken873572522")
+   *           .setFilter("filter-1274492040")
    *           .build();
    *   for (KnowledgeBase element : knowledgeBasesClient.listKnowledgeBases(request).iterateAll()) {
    *     // doThingsWith(element);
@@ -270,6 +271,7 @@ public final ListKnowledgeBasesPagedResponse listKnowledgeBases(
    *           .setParent(ProjectName.of("[PROJECT]").toString())
    *           .setPageSize(883849137)
    *           .setPageToken("pageToken873572522")
+   *           .setFilter("filter-1274492040")
    *           .build();
    *   ApiFuture<KnowledgeBase> future =
    *       knowledgeBasesClient.listKnowledgeBasesPagedCallable().futureCall(request);
@@ -298,6 +300,7 @@ public final ListKnowledgeBasesPagedResponse listKnowledgeBases(
    *           .setParent(ProjectName.of("[PROJECT]").toString())
    *           .setPageSize(883849137)
    *           .setPageToken("pageToken873572522")
+   *           .setFilter("filter-1274492040")
    *           .build();
    *   while (true) {
    *     ListKnowledgeBasesResponse response =
diff --git a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/gapic_metadata.json b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/gapic_metadata.json
index a131b7226..7b3a63e9e 100644
--- a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/gapic_metadata.json
+++ b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/gapic_metadata.json
@@ -142,6 +142,9 @@
             "DeleteDocument": {
               "methods": ["deleteDocumentAsync", "deleteDocumentAsync", "deleteDocumentAsync", "deleteDocumentOperationCallable", "deleteDocumentCallable"]
             },
+            "ExportDocument": {
+              "methods": ["exportDocumentAsync", "exportDocumentOperationCallable", "exportDocumentCallable"]
+            },
             "GetDocument": {
               "methods": ["getDocument", "getDocument", "getDocument", "getDocumentCallable"]
             },
diff --git a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/DocumentsStub.java b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/DocumentsStub.java
index 0f92f6813..7b89962d3 100644
--- a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/DocumentsStub.java
+++ b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/DocumentsStub.java
@@ -24,6 +24,7 @@
 import com.google.cloud.dialogflow.v2.CreateDocumentRequest;
 import com.google.cloud.dialogflow.v2.DeleteDocumentRequest;
 import com.google.cloud.dialogflow.v2.Document;
+import com.google.cloud.dialogflow.v2.ExportDocumentRequest;
 import com.google.cloud.dialogflow.v2.GetDocumentRequest;
 import com.google.cloud.dialogflow.v2.KnowledgeOperationMetadata;
 import com.google.cloud.dialogflow.v2.ListDocumentsRequest;
@@ -97,6 +98,15 @@ public UnaryCallable<ReloadDocumentRequest, Operation> reloadDocumentCallable()
     throw new UnsupportedOperationException("Not implemented: reloadDocumentCallable()");
   }
 
+  public OperationCallable<ExportDocumentRequest, Document, KnowledgeOperationMetadata>
+      exportDocumentOperationCallable() {
+    throw new UnsupportedOperationException("Not implemented: exportDocumentOperationCallable()");
+  }
+
+  public UnaryCallable<ExportDocumentRequest, Operation> exportDocumentCallable() {
+    throw new UnsupportedOperationException("Not implemented: exportDocumentCallable()");
+  }
+
   @Override
   public abstract void close();
 }
diff --git a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/DocumentsStubSettings.java b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/DocumentsStubSettings.java
index 5720254ae..09afd2b42 100644
--- a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/DocumentsStubSettings.java
+++ b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/DocumentsStubSettings.java
@@ -47,6 +47,7 @@
 import com.google.cloud.dialogflow.v2.CreateDocumentRequest;
 import com.google.cloud.dialogflow.v2.DeleteDocumentRequest;
 import com.google.cloud.dialogflow.v2.Document;
+import com.google.cloud.dialogflow.v2.ExportDocumentRequest;
 import com.google.cloud.dialogflow.v2.GetDocumentRequest;
 import com.google.cloud.dialogflow.v2.KnowledgeOperationMetadata;
 import com.google.cloud.dialogflow.v2.ListDocumentsRequest;
@@ -120,6 +121,9 @@ public class DocumentsStubSettings extends StubSettings<DocumentsStubSettings> {
   private final UnaryCallSettings<ReloadDocumentRequest, Operation> reloadDocumentSettings;
   private final OperationCallSettings<ReloadDocumentRequest, Document, KnowledgeOperationMetadata>
       reloadDocumentOperationSettings;
+  private final UnaryCallSettings<ExportDocumentRequest, Operation> exportDocumentSettings;
+  private final OperationCallSettings<ExportDocumentRequest, Document, KnowledgeOperationMetadata>
+      exportDocumentOperationSettings;
 
   private static final PagedListDescriptor<ListDocumentsRequest, ListDocumentsResponse, Document>
       LIST_DOCUMENTS_PAGE_STR_DESC =
@@ -229,6 +233,17 @@ public UnaryCallSettings<ReloadDocumentRequest, Operation> reloadDocumentSetting
     return reloadDocumentOperationSettings;
   }
 
+  /** Returns the object with the settings used for calls to exportDocument. */
+  public UnaryCallSettings<ExportDocumentRequest, Operation> exportDocumentSettings() {
+    return exportDocumentSettings;
+  }
+
+  /** Returns the object with the settings used for calls to exportDocument. */
+  public OperationCallSettings<ExportDocumentRequest, Document, KnowledgeOperationMetadata>
+      exportDocumentOperationSettings() {
+    return exportDocumentOperationSettings;
+  }
+
   @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public DocumentsStub createStub() throws IOException {
     if (getTransportChannelProvider()
@@ -314,6 +329,8 @@ protected DocumentsStubSettings(Builder settingsBuilder) throws IOException {
     updateDocumentOperationSettings = settingsBuilder.updateDocumentOperationSettings().build();
     reloadDocumentSettings = settingsBuilder.reloadDocumentSettings().build();
     reloadDocumentOperationSettings = settingsBuilder.reloadDocumentOperationSettings().build();
+    exportDocumentSettings = settingsBuilder.exportDocumentSettings().build();
+    exportDocumentOperationSettings = settingsBuilder.exportDocumentOperationSettings().build();
   }
 
   /** Builder for DocumentsStubSettings. */
@@ -343,6 +360,11 @@ public static class Builder extends StubSettings.Builder<DocumentsStubSettings,
     private final OperationCallSettings.Builder<
             ReloadDocumentRequest, Document, KnowledgeOperationMetadata>
         reloadDocumentOperationSettings;
+    private final UnaryCallSettings.Builder<ExportDocumentRequest, Operation>
+        exportDocumentSettings;
+    private final OperationCallSettings.Builder<
+            ExportDocumentRequest, Document, KnowledgeOperationMetadata>
+        exportDocumentOperationSettings;
     private static final ImmutableMap<String, ImmutableSet<StatusCode.Code>>
         RETRYABLE_CODE_DEFINITIONS;
 
@@ -391,6 +413,8 @@ protected Builder(ClientContext clientContext) {
       updateDocumentOperationSettings = OperationCallSettings.newBuilder();
       reloadDocumentSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
       reloadDocumentOperationSettings = OperationCallSettings.newBuilder();
+      exportDocumentSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      exportDocumentOperationSettings = OperationCallSettings.newBuilder();
 
       unaryMethodSettingsBuilders =
           ImmutableList.<UnaryCallSettings.Builder<?, ?>>of(
@@ -399,7 +423,8 @@ protected Builder(ClientContext clientContext) {
               createDocumentSettings,
               deleteDocumentSettings,
               updateDocumentSettings,
-              reloadDocumentSettings);
+              reloadDocumentSettings,
+              exportDocumentSettings);
       initDefaults(this);
     }
 
@@ -416,6 +441,8 @@ protected Builder(DocumentsStubSettings settings) {
       updateDocumentOperationSettings = settings.updateDocumentOperationSettings.toBuilder();
       reloadDocumentSettings = settings.reloadDocumentSettings.toBuilder();
       reloadDocumentOperationSettings = settings.reloadDocumentOperationSettings.toBuilder();
+      exportDocumentSettings = settings.exportDocumentSettings.toBuilder();
+      exportDocumentOperationSettings = settings.exportDocumentOperationSettings.toBuilder();
 
       unaryMethodSettingsBuilders =
           ImmutableList.<UnaryCallSettings.Builder<?, ?>>of(
@@ -424,7 +451,8 @@ protected Builder(DocumentsStubSettings settings) {
               createDocumentSettings,
               deleteDocumentSettings,
               updateDocumentSettings,
-              reloadDocumentSettings);
+              reloadDocumentSettings,
+              exportDocumentSettings);
     }
 
     private static Builder createDefault() {
@@ -471,6 +499,11 @@ private static Builder initDefaults(Builder builder) {
           .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("retry_policy_0_codes"))
           .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("retry_policy_0_params"));
 
+      builder
+          .exportDocumentSettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("retry_policy_0_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("retry_policy_0_params"));
+
       builder
           .createDocumentOperationSettings()
           .setInitialCallSettings(
@@ -571,6 +604,31 @@ private static Builder initDefaults(Builder builder) {
                       .setTotalTimeout(Duration.ofMillis(300000L))
                       .build()));
 
+      builder
+          .exportDocumentOperationSettings()
+          .setInitialCallSettings(
+              UnaryCallSettings
+                  .<ExportDocumentRequest, OperationSnapshot>newUnaryCallSettingsBuilder()
+                  .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("retry_policy_0_codes"))
+                  .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("retry_policy_0_params"))
+                  .build())
+          .setResponseTransformer(
+              ProtoOperationTransformers.ResponseTransformer.create(Document.class))
+          .setMetadataTransformer(
+              ProtoOperationTransformers.MetadataTransformer.create(
+                  KnowledgeOperationMetadata.class))
+          .setPollingAlgorithm(
+              OperationTimedPollAlgorithm.create(
+                  RetrySettings.newBuilder()
+                      .setInitialRetryDelay(Duration.ofMillis(5000L))
+                      .setRetryDelayMultiplier(1.5)
+                      .setMaxRetryDelay(Duration.ofMillis(45000L))
+                      .setInitialRpcTimeout(Duration.ZERO)
+                      .setRpcTimeoutMultiplier(1.0)
+                      .setMaxRpcTimeout(Duration.ZERO)
+                      .setTotalTimeout(Duration.ofMillis(300000L))
+                      .build()));
+
       return builder;
     }
 
@@ -656,6 +714,20 @@ public UnaryCallSettings.Builder<ReloadDocumentRequest, Operation> reloadDocumen
       return reloadDocumentOperationSettings;
     }
 
+    /** Returns the builder for the settings used for calls to exportDocument. */
+    public UnaryCallSettings.Builder<ExportDocumentRequest, Operation> exportDocumentSettings() {
+      return exportDocumentSettings;
+    }
+
+    /** Returns the builder for the settings used for calls to exportDocument. */
+    @BetaApi(
+        "The surface for use by generated code is not stable yet and may change in the future.")
+    public OperationCallSettings.Builder<
+            ExportDocumentRequest, Document, KnowledgeOperationMetadata>
+        exportDocumentOperationSettings() {
+      return exportDocumentOperationSettings;
+    }
+
     @Override
     public DocumentsStubSettings build() throws IOException {
       return new DocumentsStubSettings(this);
diff --git a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcDocumentsStub.java b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcDocumentsStub.java
index 241c1345a..ab60507a1 100644
--- a/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcDocumentsStub.java
+++ b/google-cloud-dialogflow/src/main/java/com/google/cloud/dialogflow/v2/stub/GrpcDocumentsStub.java
@@ -28,6 +28,7 @@
 import com.google.cloud.dialogflow.v2.CreateDocumentRequest;
 import com.google.cloud.dialogflow.v2.DeleteDocumentRequest;
 import com.google.cloud.dialogflow.v2.Document;
+import com.google.cloud.dialogflow.v2.ExportDocumentRequest;
 import com.google.cloud.dialogflow.v2.GetDocumentRequest;
 import com.google.cloud.dialogflow.v2.KnowledgeOperationMetadata;
 import com.google.cloud.dialogflow.v2.ListDocumentsRequest;
@@ -111,6 +112,16 @@ public class GrpcDocumentsStub extends DocumentsStub {
               .setResponseMarshaller(ProtoUtils.marshaller(Operation.getDefaultInstance()))
               .build();
 
+  private static final MethodDescriptor<ExportDocumentRequest, Operation>
+      exportDocumentMethodDescriptor =
+          MethodDescriptor.<ExportDocumentRequest, Operation>newBuilder()
+              .setType(MethodDescriptor.MethodType.UNARY)
+              .setFullMethodName("google.cloud.dialogflow.v2.Documents/ExportDocument")
+              .setRequestMarshaller(
+                  ProtoUtils.marshaller(ExportDocumentRequest.getDefaultInstance()))
+              .setResponseMarshaller(ProtoUtils.marshaller(Operation.getDefaultInstance()))
+              .build();
+
   private final UnaryCallable<ListDocumentsRequest, ListDocumentsResponse> listDocumentsCallable;
   private final UnaryCallable<ListDocumentsRequest, ListDocumentsPagedResponse>
       listDocumentsPagedCallable;
@@ -127,6 +138,9 @@ public class GrpcDocumentsStub extends DocumentsStub {
   private final UnaryCallable<ReloadDocumentRequest, Operation> reloadDocumentCallable;
   private final OperationCallable<ReloadDocumentRequest, Document, KnowledgeOperationMetadata>
       reloadDocumentOperationCallable;
+  private final UnaryCallable<ExportDocumentRequest, Operation> exportDocumentCallable;
+  private final OperationCallable<ExportDocumentRequest, Document, KnowledgeOperationMetadata>
+      exportDocumentOperationCallable;
 
   private final BackgroundResource backgroundResources;
   private final GrpcOperationsStub operationsStub;
@@ -229,6 +243,16 @@ protected GrpcDocumentsStub(
                   return params.build();
                 })
             .build();
+    GrpcCallSettings<ExportDocumentRequest, Operation> exportDocumentTransportSettings =
+        GrpcCallSettings.<ExportDocumentRequest, Operation>newBuilder()
+            .setMethodDescriptor(exportDocumentMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  ImmutableMap.Builder<String, String> params = ImmutableMap.builder();
+                  params.put("name", String.valueOf(request.getName()));
+                  return params.build();
+                })
+            .build();
 
     this.listDocumentsCallable =
         callableFactory.createUnaryCallable(
@@ -275,6 +299,15 @@ protected GrpcDocumentsStub(
             settings.reloadDocumentOperationSettings(),
             clientContext,
             operationsStub);
+    this.exportDocumentCallable =
+        callableFactory.createUnaryCallable(
+            exportDocumentTransportSettings, settings.exportDocumentSettings(), clientContext);
+    this.exportDocumentOperationCallable =
+        callableFactory.createOperationCallable(
+            exportDocumentTransportSettings,
+            settings.exportDocumentOperationSettings(),
+            clientContext,
+            operationsStub);
 
     this.backgroundResources =
         new BackgroundResourceAggregation(clientContext.getBackgroundResources());
@@ -344,6 +377,17 @@ public UnaryCallable<ReloadDocumentRequest, Operation> reloadDocumentCallable()
     return reloadDocumentOperationCallable;
   }
 
+  @Override
+  public UnaryCallable<ExportDocumentRequest, Operation> exportDocumentCallable() {
+    return exportDocumentCallable;
+  }
+
+  @Override
+  public OperationCallable<ExportDocumentRequest, Document, KnowledgeOperationMetadata>
+      exportDocumentOperationCallable() {
+    return exportDocumentOperationCallable;
+  }
+
   @Override
   public final void close() {
     try {
diff --git a/google-cloud-dialogflow/src/test/java/com/google/cloud/dialogflow/v2/DocumentsClientTest.java b/google-cloud-dialogflow/src/test/java/com/google/cloud/dialogflow/v2/DocumentsClientTest.java
index 4e66502eb..88446733d 100644
--- a/google-cloud-dialogflow/src/test/java/com/google/cloud/dialogflow/v2/DocumentsClientTest.java
+++ b/google-cloud-dialogflow/src/test/java/com/google/cloud/dialogflow/v2/DocumentsClientTest.java
@@ -657,4 +657,79 @@ public void reloadDocumentExceptionTest2() throws Exception {
       Assert.assertEquals(StatusCode.Code.INVALID_ARGUMENT, apiException.getStatusCode().getCode());
     }
   }
+
+  @Test
+  public void exportDocumentTest() throws Exception {
+    Document expectedResponse =
+        Document.newBuilder()
+            .setName(
+                DocumentName.ofProjectKnowledgeBaseDocumentName(
+                        "[PROJECT]", "[KNOWLEDGE_BASE]", "[DOCUMENT]")
+                    .toString())
+            .setDisplayName("displayName1714148973")
+            .setMimeType("mimeType-1392120434")
+            .addAllKnowledgeTypes(new ArrayList<Document.KnowledgeType>())
+            .setEnableAutoReload(true)
+            .setLatestReloadStatus(Document.ReloadStatus.newBuilder().build())
+            .putAllMetadata(new HashMap<String, String>())
+            .build();
+    Operation resultOperation =
+        Operation.newBuilder()
+            .setName("exportDocumentTest")
+            .setDone(true)
+            .setResponse(Any.pack(expectedResponse))
+            .build();
+    mockDocuments.addResponse(resultOperation);
+
+    ExportDocumentRequest request =
+        ExportDocumentRequest.newBuilder()
+            .setName(
+                DocumentName.ofProjectKnowledgeBaseDocumentName(
+                        "[PROJECT]", "[KNOWLEDGE_BASE]", "[DOCUMENT]")
+                    .toString())
+            .setExportFullContent(true)
+            .setSmartMessagingPartialUpdate(true)
+            .build();
+
+    Document actualResponse = client.exportDocumentAsync(request).get();
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockDocuments.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    ExportDocumentRequest actualRequest = ((ExportDocumentRequest) actualRequests.get(0));
+
+    Assert.assertEquals(request.getName(), actualRequest.getName());
+    Assert.assertEquals(request.getGcsDestination(), actualRequest.getGcsDestination());
+    Assert.assertEquals(request.getExportFullContent(), actualRequest.getExportFullContent());
+    Assert.assertEquals(
+        request.getSmartMessagingPartialUpdate(), actualRequest.getSmartMessagingPartialUpdate());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void exportDocumentExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockDocuments.addException(exception);
+
+    try {
+      ExportDocumentRequest request =
+          ExportDocumentRequest.newBuilder()
+              .setName(
+                  DocumentName.ofProjectKnowledgeBaseDocumentName(
+                          "[PROJECT]", "[KNOWLEDGE_BASE]", "[DOCUMENT]")
+                      .toString())
+              .setExportFullContent(true)
+              .setSmartMessagingPartialUpdate(true)
+              .build();
+      client.exportDocumentAsync(request).get();
+      Assert.fail("No exception raised");
+    } catch (ExecutionException e) {
+      Assert.assertEquals(InvalidArgumentException.class, e.getCause().getClass());
+      InvalidArgumentException apiException = ((InvalidArgumentException) e.getCause());
+      Assert.assertEquals(StatusCode.Code.INVALID_ARGUMENT, apiException.getStatusCode().getCode());
+    }
+  }
 }
diff --git a/google-cloud-dialogflow/src/test/java/com/google/cloud/dialogflow/v2/MockDocumentsImpl.java b/google-cloud-dialogflow/src/test/java/com/google/cloud/dialogflow/v2/MockDocumentsImpl.java
index 5a9f341f9..3e74f0a13 100644
--- a/google-cloud-dialogflow/src/test/java/com/google/cloud/dialogflow/v2/MockDocumentsImpl.java
+++ b/google-cloud-dialogflow/src/test/java/com/google/cloud/dialogflow/v2/MockDocumentsImpl.java
@@ -183,4 +183,25 @@ public void reloadDocument(
                   Exception.class.getName())));
     }
   }
+
+  @Override
+  public void exportDocument(
+      ExportDocumentRequest request, StreamObserver<Operation> responseObserver) {
+    Object response = responses.poll();
+    if (response instanceof Operation) {
+      requests.add(request);
+      responseObserver.onNext(((Operation) response));
+      responseObserver.onCompleted();
+    } else if (response instanceof Exception) {
+      responseObserver.onError(((Exception) response));
+    } else {
+      responseObserver.onError(
+          new IllegalArgumentException(
+              String.format(
+                  "Unrecognized response type %s for method ExportDocument, expected %s or %s",
+                  response == null ? "null" : response.getClass().getName(),
+                  Operation.class.getName(),
+                  Exception.class.getName())));
+    }
+  }
 }
diff --git a/grpc-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/DocumentsGrpc.java b/grpc-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/DocumentsGrpc.java
index bda2159ad..3afd54b78 100644
--- a/grpc-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/DocumentsGrpc.java
+++ b/grpc-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/DocumentsGrpc.java
@@ -294,6 +294,48 @@ private DocumentsGrpc() {}
     return getReloadDocumentMethod;
   }
 
+  private static volatile io.grpc.MethodDescriptor<
+          com.google.cloud.dialogflow.v2.ExportDocumentRequest, com.google.longrunning.Operation>
+      getExportDocumentMethod;
+
+  @io.grpc.stub.annotations.RpcMethod(
+      fullMethodName = SERVICE_NAME + '/' + "ExportDocument",
+      requestType = com.google.cloud.dialogflow.v2.ExportDocumentRequest.class,
+      responseType = com.google.longrunning.Operation.class,
+      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
+  public static io.grpc.MethodDescriptor<
+          com.google.cloud.dialogflow.v2.ExportDocumentRequest, com.google.longrunning.Operation>
+      getExportDocumentMethod() {
+    io.grpc.MethodDescriptor<
+            com.google.cloud.dialogflow.v2.ExportDocumentRequest, com.google.longrunning.Operation>
+        getExportDocumentMethod;
+    if ((getExportDocumentMethod = DocumentsGrpc.getExportDocumentMethod) == null) {
+      synchronized (DocumentsGrpc.class) {
+        if ((getExportDocumentMethod = DocumentsGrpc.getExportDocumentMethod) == null) {
+          DocumentsGrpc.getExportDocumentMethod =
+              getExportDocumentMethod =
+                  io.grpc.MethodDescriptor
+                      .<com.google.cloud.dialogflow.v2.ExportDocumentRequest,
+                          com.google.longrunning.Operation>
+                          newBuilder()
+                      .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
+                      .setFullMethodName(generateFullMethodName(SERVICE_NAME, "ExportDocument"))
+                      .setSampledToLocalTracing(true)
+                      .setRequestMarshaller(
+                          io.grpc.protobuf.ProtoUtils.marshaller(
+                              com.google.cloud.dialogflow.v2.ExportDocumentRequest
+                                  .getDefaultInstance()))
+                      .setResponseMarshaller(
+                          io.grpc.protobuf.ProtoUtils.marshaller(
+                              com.google.longrunning.Operation.getDefaultInstance()))
+                      .setSchemaDescriptor(new DocumentsMethodDescriptorSupplier("ExportDocument"))
+                      .build();
+        }
+      }
+    }
+    return getExportDocumentMethod;
+  }
+
   /** Creates a new async stub that supports all call types for the service */
   public static DocumentsStub newStub(io.grpc.Channel channel) {
     io.grpc.stub.AbstractStub.StubFactory<DocumentsStub> factory =
@@ -454,6 +496,26 @@ public void reloadDocument(
           getReloadDocumentMethod(), responseObserver);
     }
 
+    /**
+     *
+     *
+     * <pre>
+     * Exports a smart messaging candidate document into the specified
+     * destination.
+     * This method is a [long-running
+     * operation](https://cloud.google.com/dialogflow/cx/docs/how/long-running-operation).
+     * The returned `Operation` type has the following method-specific fields:
+     * - `metadata`: [KnowledgeOperationMetadata][google.cloud.dialogflow.v2.KnowledgeOperationMetadata]
+     * - `response`: [Document][google.cloud.dialogflow.v2.Document]
+     * </pre>
+     */
+    public void exportDocument(
+        com.google.cloud.dialogflow.v2.ExportDocumentRequest request,
+        io.grpc.stub.StreamObserver<com.google.longrunning.Operation> responseObserver) {
+      io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall(
+          getExportDocumentMethod(), responseObserver);
+    }
+
     @java.lang.Override
     public final io.grpc.ServerServiceDefinition bindService() {
       return io.grpc.ServerServiceDefinition.builder(getServiceDescriptor())
@@ -494,6 +556,12 @@ public final io.grpc.ServerServiceDefinition bindService() {
                   new MethodHandlers<
                       com.google.cloud.dialogflow.v2.ReloadDocumentRequest,
                       com.google.longrunning.Operation>(this, METHODID_RELOAD_DOCUMENT)))
+          .addMethod(
+              getExportDocumentMethod(),
+              io.grpc.stub.ServerCalls.asyncUnaryCall(
+                  new MethodHandlers<
+                      com.google.cloud.dialogflow.v2.ExportDocumentRequest,
+                      com.google.longrunning.Operation>(this, METHODID_EXPORT_DOCUMENT)))
           .build();
     }
   }
@@ -637,6 +705,28 @@ public void reloadDocument(
           request,
           responseObserver);
     }
+
+    /**
+     *
+     *
+     * <pre>
+     * Exports a smart messaging candidate document into the specified
+     * destination.
+     * This method is a [long-running
+     * operation](https://cloud.google.com/dialogflow/cx/docs/how/long-running-operation).
+     * The returned `Operation` type has the following method-specific fields:
+     * - `metadata`: [KnowledgeOperationMetadata][google.cloud.dialogflow.v2.KnowledgeOperationMetadata]
+     * - `response`: [Document][google.cloud.dialogflow.v2.Document]
+     * </pre>
+     */
+    public void exportDocument(
+        com.google.cloud.dialogflow.v2.ExportDocumentRequest request,
+        io.grpc.stub.StreamObserver<com.google.longrunning.Operation> responseObserver) {
+      io.grpc.stub.ClientCalls.asyncUnaryCall(
+          getChannel().newCall(getExportDocumentMethod(), getCallOptions()),
+          request,
+          responseObserver);
+    }
   }
 
   /**
@@ -761,6 +851,25 @@ public com.google.longrunning.Operation reloadDocument(
       return io.grpc.stub.ClientCalls.blockingUnaryCall(
           getChannel(), getReloadDocumentMethod(), getCallOptions(), request);
     }
+
+    /**
+     *
+     *
+     * <pre>
+     * Exports a smart messaging candidate document into the specified
+     * destination.
+     * This method is a [long-running
+     * operation](https://cloud.google.com/dialogflow/cx/docs/how/long-running-operation).
+     * The returned `Operation` type has the following method-specific fields:
+     * - `metadata`: [KnowledgeOperationMetadata][google.cloud.dialogflow.v2.KnowledgeOperationMetadata]
+     * - `response`: [Document][google.cloud.dialogflow.v2.Document]
+     * </pre>
+     */
+    public com.google.longrunning.Operation exportDocument(
+        com.google.cloud.dialogflow.v2.ExportDocumentRequest request) {
+      return io.grpc.stub.ClientCalls.blockingUnaryCall(
+          getChannel(), getExportDocumentMethod(), getCallOptions(), request);
+    }
   }
 
   /**
@@ -886,6 +995,25 @@ protected DocumentsFutureStub build(io.grpc.Channel channel, io.grpc.CallOptions
       return io.grpc.stub.ClientCalls.futureUnaryCall(
           getChannel().newCall(getReloadDocumentMethod(), getCallOptions()), request);
     }
+
+    /**
+     *
+     *
+     * <pre>
+     * Exports a smart messaging candidate document into the specified
+     * destination.
+     * This method is a [long-running
+     * operation](https://cloud.google.com/dialogflow/cx/docs/how/long-running-operation).
+     * The returned `Operation` type has the following method-specific fields:
+     * - `metadata`: [KnowledgeOperationMetadata][google.cloud.dialogflow.v2.KnowledgeOperationMetadata]
+     * - `response`: [Document][google.cloud.dialogflow.v2.Document]
+     * </pre>
+     */
+    public com.google.common.util.concurrent.ListenableFuture<com.google.longrunning.Operation>
+        exportDocument(com.google.cloud.dialogflow.v2.ExportDocumentRequest request) {
+      return io.grpc.stub.ClientCalls.futureUnaryCall(
+          getChannel().newCall(getExportDocumentMethod(), getCallOptions()), request);
+    }
   }
 
   private static final int METHODID_LIST_DOCUMENTS = 0;
@@ -894,6 +1022,7 @@ protected DocumentsFutureStub build(io.grpc.Channel channel, io.grpc.CallOptions
   private static final int METHODID_DELETE_DOCUMENT = 3;
   private static final int METHODID_UPDATE_DOCUMENT = 4;
   private static final int METHODID_RELOAD_DOCUMENT = 5;
+  private static final int METHODID_EXPORT_DOCUMENT = 6;
 
   private static final class MethodHandlers<Req, Resp>
       implements io.grpc.stub.ServerCalls.UnaryMethod<Req, Resp>,
@@ -944,6 +1073,11 @@ public void invoke(Req request, io.grpc.stub.StreamObserver<Resp> responseObserv
               (com.google.cloud.dialogflow.v2.ReloadDocumentRequest) request,
               (io.grpc.stub.StreamObserver<com.google.longrunning.Operation>) responseObserver);
           break;
+        case METHODID_EXPORT_DOCUMENT:
+          serviceImpl.exportDocument(
+              (com.google.cloud.dialogflow.v2.ExportDocumentRequest) request,
+              (io.grpc.stub.StreamObserver<com.google.longrunning.Operation>) responseObserver);
+          break;
         default:
           throw new AssertionError();
       }
@@ -1014,6 +1148,7 @@ public static io.grpc.ServiceDescriptor getServiceDescriptor() {
                       .addMethod(getDeleteDocumentMethod())
                       .addMethod(getUpdateDocumentMethod())
                       .addMethod(getReloadDocumentMethod())
+                      .addMethod(getExportDocumentMethod())
                       .build();
         }
       }
diff --git a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/DocumentProto.java b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/DocumentProto.java
index 8d0d183f1..a90b315d5 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/DocumentProto.java
+++ b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/DocumentProto.java
@@ -67,6 +67,10 @@ public static void registerAllExtensions(com.google.protobuf.ExtensionRegistry r
       internal_static_google_cloud_dialogflow_v2_ReloadDocumentRequest_descriptor;
   static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_google_cloud_dialogflow_v2_ReloadDocumentRequest_fieldAccessorTable;
+  static final com.google.protobuf.Descriptors.Descriptor
+      internal_static_google_cloud_dialogflow_v2_ExportDocumentRequest_descriptor;
+  static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_google_cloud_dialogflow_v2_ExportDocumentRequest_fieldAccessorTable;
   static final com.google.protobuf.Descriptors.Descriptor
       internal_static_google_cloud_dialogflow_v2_KnowledgeOperationMetadata_descriptor;
   static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
@@ -84,117 +88,134 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "oto\022\032google.cloud.dialogflow.v2\032\034google/"
           + "api/annotations.proto\032\027google/api/client"
           + ".proto\032\037google/api/field_behavior.proto\032"
-          + "\031google/api/resource.proto\032#google/longr"
-          + "unning/operations.proto\032 google/protobuf"
-          + "/field_mask.proto\032\037google/protobuf/times"
-          + "tamp.proto\032\027google/rpc/status.proto\"\342\006\n\010"
-          + "Document\022\021\n\004name\030\001 \001(\tB\003\340A\001\022\031\n\014display_n"
-          + "ame\030\002 \001(\tB\003\340A\002\022\026\n\tmime_type\030\003 \001(\tB\003\340A\002\022P"
-          + "\n\017knowledge_types\030\004 \003(\01622.google.cloud.d"
-          + "ialogflow.v2.Document.KnowledgeTypeB\003\340A\002"
-          + "\022\025\n\013content_uri\030\005 \001(\tH\000\022\025\n\013raw_content\030\t"
-          + " \001(\014H\000\022\037\n\022enable_auto_reload\030\013 \001(\010B\003\340A\001\022"
-          + "T\n\024latest_reload_status\030\014 \001(\01321.google.c"
-          + "loud.dialogflow.v2.Document.ReloadStatus"
-          + "B\003\340A\003\022I\n\010metadata\030\007 \003(\01322.google.cloud.d"
-          + "ialogflow.v2.Document.MetadataEntryB\003\340A\001"
-          + "\032\\\n\014ReloadStatus\022(\n\004time\030\001 \001(\0132\032.google."
-          + "protobuf.Timestamp\022\"\n\006status\030\002 \001(\0132\022.goo"
-          + "gle.rpc.Status\032/\n\rMetadataEntry\022\013\n\003key\030\001"
-          + " \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"c\n\rKnowledgeType"
-          + "\022\036\n\032KNOWLEDGE_TYPE_UNSPECIFIED\020\000\022\007\n\003FAQ\020"
-          + "\001\022\021\n\rEXTRACTIVE_QA\020\002\022\026\n\022ARTICLE_SUGGESTI"
-          + "ON\020\003:\317\001\352A\313\001\n\"dialogflow.googleapis.com/D"
-          + "ocument\022Gprojects/{project}/knowledgeBas"
-          + "es/{knowledge_base}/documents/{document}"
-          + "\022\\projects/{project}/locations/{location"
-          + "}/knowledgeBases/{knowledge_base}/docume"
-          + "nts/{document}B\010\n\006source\"N\n\022GetDocumentR"
-          + "equest\0228\n\004name\030\001 \001(\tB*\340A\002\372A$\n\"dialogflow"
-          + ".googleapis.com/Document\"y\n\024ListDocument"
-          + "sRequest\022:\n\006parent\030\001 \001(\tB*\340A\002\372A$\022\"dialog"
-          + "flow.googleapis.com/Document\022\021\n\tpage_siz"
-          + "e\030\002 \001(\005\022\022\n\npage_token\030\003 \001(\t\"i\n\025ListDocum"
-          + "entsResponse\0227\n\tdocuments\030\001 \003(\0132$.google"
-          + ".cloud.dialogflow.v2.Document\022\027\n\017next_pa"
-          + "ge_token\030\002 \001(\t\"\220\001\n\025CreateDocumentRequest"
-          + "\022:\n\006parent\030\001 \001(\tB*\340A\002\372A$\022\"dialogflow.goo"
-          + "gleapis.com/Document\022;\n\010document\030\002 \001(\0132$"
-          + ".google.cloud.dialogflow.v2.DocumentB\003\340A"
-          + "\002\"Q\n\025DeleteDocumentRequest\0228\n\004name\030\001 \001(\t"
+          + "\031google/api/resource.proto\032$google/cloud"
+          + "/dialogflow/v2/gcs.proto\032#google/longrun"
+          + "ning/operations.proto\032 google/protobuf/f"
+          + "ield_mask.proto\032\037google/protobuf/timesta"
+          + "mp.proto\032\027google/rpc/status.proto\"\342\006\n\010Do"
+          + "cument\022\021\n\004name\030\001 \001(\tB\003\340A\001\022\031\n\014display_nam"
+          + "e\030\002 \001(\tB\003\340A\002\022\026\n\tmime_type\030\003 \001(\tB\003\340A\002\022P\n\017"
+          + "knowledge_types\030\004 \003(\01622.google.cloud.dia"
+          + "logflow.v2.Document.KnowledgeTypeB\003\340A\002\022\025"
+          + "\n\013content_uri\030\005 \001(\tH\000\022\025\n\013raw_content\030\t \001"
+          + "(\014H\000\022\037\n\022enable_auto_reload\030\013 \001(\010B\003\340A\001\022T\n"
+          + "\024latest_reload_status\030\014 \001(\01321.google.clo"
+          + "ud.dialogflow.v2.Document.ReloadStatusB\003"
+          + "\340A\003\022I\n\010metadata\030\007 \003(\01322.google.cloud.dia"
+          + "logflow.v2.Document.MetadataEntryB\003\340A\001\032\\"
+          + "\n\014ReloadStatus\022(\n\004time\030\001 \001(\0132\032.google.pr"
+          + "otobuf.Timestamp\022\"\n\006status\030\002 \001(\0132\022.googl"
+          + "e.rpc.Status\032/\n\rMetadataEntry\022\013\n\003key\030\001 \001"
+          + "(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"c\n\rKnowledgeType\022\036"
+          + "\n\032KNOWLEDGE_TYPE_UNSPECIFIED\020\000\022\007\n\003FAQ\020\001\022"
+          + "\021\n\rEXTRACTIVE_QA\020\002\022\026\n\022ARTICLE_SUGGESTION"
+          + "\020\003:\317\001\352A\313\001\n\"dialogflow.googleapis.com/Doc"
+          + "ument\022Gprojects/{project}/knowledgeBases"
+          + "/{knowledge_base}/documents/{document}\022\\"
+          + "projects/{project}/locations/{location}/"
+          + "knowledgeBases/{knowledge_base}/document"
+          + "s/{document}B\010\n\006source\"N\n\022GetDocumentReq"
+          + "uest\0228\n\004name\030\001 \001(\tB*\340A\002\372A$\n\"dialogflow.g"
+          + "oogleapis.com/Document\"\211\001\n\024ListDocuments"
+          + "Request\022:\n\006parent\030\001 \001(\tB*\340A\002\372A$\022\"dialogf"
+          + "low.googleapis.com/Document\022\021\n\tpage_size"
+          + "\030\002 \001(\005\022\022\n\npage_token\030\003 \001(\t\022\016\n\006filter\030\004 \001"
+          + "(\t\"i\n\025ListDocumentsResponse\0227\n\tdocuments"
+          + "\030\001 \003(\0132$.google.cloud.dialogflow.v2.Docu"
+          + "ment\022\027\n\017next_page_token\030\002 \001(\t\"\220\001\n\025Create"
+          + "DocumentRequest\022:\n\006parent\030\001 \001(\tB*\340A\002\372A$\022"
+          + "\"dialogflow.googleapis.com/Document\022;\n\010d"
+          + "ocument\030\002 \001(\0132$.google.cloud.dialogflow."
+          + "v2.DocumentB\003\340A\002\"Q\n\025DeleteDocumentReques"
+          + "t\0228\n\004name\030\001 \001(\tB*\340A\002\372A$\n\"dialogflow.goog"
+          + "leapis.com/Document\"\212\001\n\025UpdateDocumentRe"
+          + "quest\022;\n\010document\030\001 \001(\0132$.google.cloud.d"
+          + "ialogflow.v2.DocumentB\003\340A\002\0224\n\013update_mas"
+          + "k\030\002 \001(\0132\032.google.protobuf.FieldMaskB\003\340A\001"
+          + "\"\315\001\n\025ReloadDocumentRequest\0228\n\004name\030\001 \001(\t"
           + "B*\340A\002\372A$\n\"dialogflow.googleapis.com/Docu"
-          + "ment\"\212\001\n\025UpdateDocumentRequest\022;\n\010docume"
-          + "nt\030\001 \001(\0132$.google.cloud.dialogflow.v2.Do"
-          + "cumentB\003\340A\002\0224\n\013update_mask\030\002 \001(\0132\032.googl"
-          + "e.protobuf.FieldMaskB\003\340A\001\"w\n\025ReloadDocum"
-          + "entRequest\0228\n\004name\030\001 \001(\tB*\340A\002\372A$\n\"dialog"
-          + "flow.googleapis.com/Document\022\032\n\013content_"
-          + "uri\030\003 \001(\tB\003\340A\001H\000B\010\n\006source\"\262\001\n\032Knowledge"
-          + "OperationMetadata\022P\n\005state\030\001 \001(\0162<.googl"
-          + "e.cloud.dialogflow.v2.KnowledgeOperation"
-          + "Metadata.StateB\003\340A\003\"B\n\005State\022\025\n\021STATE_UN"
-          + "SPECIFIED\020\000\022\013\n\007PENDING\020\001\022\013\n\007RUNNING\020\002\022\010\n"
-          + "\004DONE\020\0032\327\021\n\tDocuments\022\271\002\n\rListDocuments\022"
-          + "0.google.cloud.dialogflow.v2.ListDocumen"
-          + "tsRequest\0321.google.cloud.dialogflow.v2.L"
-          + "istDocumentsResponse\"\302\001\202\323\344\223\002\262\001\0222/v2/{par"
-          + "ent=projects/*/knowledgeBases/*}/documen"
-          + "tsZ@\022>/v2/{parent=projects/*/locations/*"
-          + "/knowledgeBases/*}/documentsZ:\0228/v2/{par"
-          + "ent=projects/*/agent/knowledgeBases/*}/d"
-          + "ocuments\332A\006parent\022\246\002\n\013GetDocument\022..goog"
-          + "le.cloud.dialogflow.v2.GetDocumentReques"
-          + "t\032$.google.cloud.dialogflow.v2.Document\""
-          + "\300\001\202\323\344\223\002\262\001\0222/v2/{name=projects/*/knowledg"
-          + "eBases/*/documents/*}Z@\022>/v2/{name=proje"
-          + "cts/*/locations/*/knowledgeBases/*/docum"
-          + "ents/*}Z:\0228/v2/{name=projects/*/agent/kn"
-          + "owledgeBases/*/documents/*}\332A\004name\022\367\002\n\016C"
-          + "reateDocument\0221.google.cloud.dialogflow."
-          + "v2.CreateDocumentRequest\032\035.google.longru"
-          + "nning.Operation\"\222\002\202\323\344\223\002\320\001\"2/v2/{parent=p"
-          + "rojects/*/knowledgeBases/*}/documents:\010d"
-          + "ocumentZJ\">/v2/{parent=projects/*/locati"
-          + "ons/*/knowledgeBases/*}/documents:\010docum"
-          + "entZD\"8/v2/{parent=projects/*/agent/know"
-          + "ledgeBases/*}/documents:\010document\332A\017pare"
-          + "nt,document\312A&\n\010Document\022\032KnowledgeOpera"
-          + "tionMetadata\022\333\002\n\016DeleteDocument\0221.google"
-          + ".cloud.dialogflow.v2.DeleteDocumentReque"
-          + "st\032\035.google.longrunning.Operation\"\366\001\202\323\344\223"
-          + "\002\262\001*2/v2/{name=projects/*/knowledgeBases"
-          + "/*/documents/*}Z@*>/v2/{name=projects/*/"
-          + "locations/*/knowledgeBases/*/documents/*"
-          + "}Z:*8/v2/{name=projects/*/agent/knowledg"
-          + "eBases/*/documents/*}\332A\004name\312A3\n\025google."
-          + "protobuf.Empty\022\032KnowledgeOperationMetada"
-          + "ta\022\227\003\n\016UpdateDocument\0221.google.cloud.dia"
-          + "logflow.v2.UpdateDocumentRequest\032\035.googl"
-          + "e.longrunning.Operation\"\262\002\202\323\344\223\002\353\0012;/v2/{"
-          + "document.name=projects/*/knowledgeBases/"
-          + "*/documents/*}:\010documentZS2G/v2/{documen"
-          + "t.name=projects/*/locations/*/knowledgeB"
-          + "ases/*/documents/*}:\010documentZM2A/v2/{do"
-          + "cument.name=projects/*/agent/knowledgeBa"
-          + "ses/*/documents/*}:\010document\332A\024document,"
-          + "update_mask\312A&\n\010Document\022\032KnowledgeOpera"
-          + "tionMetadata\022\370\002\n\016ReloadDocument\0221.google"
-          + ".cloud.dialogflow.v2.ReloadDocumentReque"
-          + "st\032\035.google.longrunning.Operation\"\223\002\202\323\344\223"
-          + "\002\320\001\"9/v2/{name=projects/*/knowledgeBases"
-          + "/*/documents/*}:reload:\001*ZJ\"E/v2/{name=p"
+          + "ment\022\032\n\013content_uri\030\003 \001(\tB\003\340A\001H\000\022\'\n\032impo"
+          + "rt_gcs_custom_metadata\030\004 \001(\010B\003\340A\001\022+\n\036sma"
+          + "rt_messaging_partial_update\030\005 \001(\010B\003\340A\001B\010"
+          + "\n\006source\"\354\001\n\025ExportDocumentRequest\0228\n\004na"
+          + "me\030\001 \001(\tB*\340A\002\372A$\n\"dialogflow.googleapis."
+          + "com/Document\022E\n\017gcs_destination\030\002 \001(\0132*."
+          + "google.cloud.dialogflow.v2.GcsDestinatio"
+          + "nH\000\022\033\n\023export_full_content\030\003 \001(\010\022&\n\036smar"
+          + "t_messaging_partial_update\030\005 \001(\010B\r\n\013dest"
+          + "ination\"\262\001\n\032KnowledgeOperationMetadata\022P"
+          + "\n\005state\030\001 \001(\0162<.google.cloud.dialogflow."
+          + "v2.KnowledgeOperationMetadata.StateB\003\340A\003"
+          + "\"B\n\005State\022\025\n\021STATE_UNSPECIFIED\020\000\022\013\n\007PEND"
+          + "ING\020\001\022\013\n\007RUNNING\020\002\022\010\n\004DONE\020\0032\371\023\n\tDocumen"
+          + "ts\022\271\002\n\rListDocuments\0220.google.cloud.dial"
+          + "ogflow.v2.ListDocumentsRequest\0321.google."
+          + "cloud.dialogflow.v2.ListDocumentsRespons"
+          + "e\"\302\001\202\323\344\223\002\262\001\0222/v2/{parent=projects/*/know"
+          + "ledgeBases/*}/documentsZ@\022>/v2/{parent=p"
+          + "rojects/*/locations/*/knowledgeBases/*}/"
+          + "documentsZ:\0228/v2/{parent=projects/*/agen"
+          + "t/knowledgeBases/*}/documents\332A\006parent\022\246"
+          + "\002\n\013GetDocument\022..google.cloud.dialogflow"
+          + ".v2.GetDocumentRequest\032$.google.cloud.di"
+          + "alogflow.v2.Document\"\300\001\202\323\344\223\002\262\001\0222/v2/{nam"
+          + "e=projects/*/knowledgeBases/*/documents/"
+          + "*}Z@\022>/v2/{name=projects/*/locations/*/k"
+          + "nowledgeBases/*/documents/*}Z:\0228/v2/{nam"
+          + "e=projects/*/agent/knowledgeBases/*/docu"
+          + "ments/*}\332A\004name\022\367\002\n\016CreateDocument\0221.goo"
+          + "gle.cloud.dialogflow.v2.CreateDocumentRe"
+          + "quest\032\035.google.longrunning.Operation\"\222\002\202"
+          + "\323\344\223\002\320\001\"2/v2/{parent=projects/*/knowledge"
+          + "Bases/*}/documents:\010documentZJ\">/v2/{par"
+          + "ent=projects/*/locations/*/knowledgeBase"
+          + "s/*}/documents:\010documentZD\"8/v2/{parent="
+          + "projects/*/agent/knowledgeBases/*}/docum"
+          + "ents:\010document\332A\017parent,document\312A&\n\010Doc"
+          + "ument\022\032KnowledgeOperationMetadata\022\333\002\n\016De"
+          + "leteDocument\0221.google.cloud.dialogflow.v"
+          + "2.DeleteDocumentRequest\032\035.google.longrun"
+          + "ning.Operation\"\366\001\202\323\344\223\002\262\001*2/v2/{name=proj"
+          + "ects/*/knowledgeBases/*/documents/*}Z@*>"
+          + "/v2/{name=projects/*/locations/*/knowled"
+          + "geBases/*/documents/*}Z:*8/v2/{name=proj"
+          + "ects/*/agent/knowledgeBases/*/documents/"
+          + "*}\332A\004name\312A3\n\025google.protobuf.Empty\022\032Kno"
+          + "wledgeOperationMetadata\022\227\003\n\016UpdateDocume"
+          + "nt\0221.google.cloud.dialogflow.v2.UpdateDo"
+          + "cumentRequest\032\035.google.longrunning.Opera"
+          + "tion\"\262\002\202\323\344\223\002\353\0012;/v2/{document.name=proje"
+          + "cts/*/knowledgeBases/*/documents/*}:\010doc"
+          + "umentZS2G/v2/{document.name=projects/*/l"
+          + "ocations/*/knowledgeBases/*/documents/*}"
+          + ":\010documentZM2A/v2/{document.name=project"
+          + "s/*/agent/knowledgeBases/*/documents/*}:"
+          + "\010document\332A\024document,update_mask\312A&\n\010Doc"
+          + "ument\022\032KnowledgeOperationMetadata\022\370\002\n\016Re"
+          + "loadDocument\0221.google.cloud.dialogflow.v"
+          + "2.ReloadDocumentRequest\032\035.google.longrun"
+          + "ning.Operation\"\223\002\202\323\344\223\002\320\001\"9/v2/{name=proj"
+          + "ects/*/knowledgeBases/*/documents/*}:rel"
+          + "oad:\001*ZJ\"E/v2/{name=projects/*/locations"
+          + "/*/knowledgeBases/*/documents/*}:reload:"
+          + "\001*ZD\"?/v2/{name=projects/*/agent/knowled"
+          + "geBases/*/documents/*}:reload:\001*\332A\020name,"
+          + "content_uri\312A&\n\010Document\022\032KnowledgeOpera"
+          + "tionMetadata\022\237\002\n\016ExportDocument\0221.google"
+          + ".cloud.dialogflow.v2.ExportDocumentReque"
+          + "st\032\035.google.longrunning.Operation\"\272\001\202\323\344\223"
+          + "\002\212\001\"9/v2/{name=projects/*/knowledgeBases"
+          + "/*/documents/*}:export:\001*ZJ\"E/v2/{name=p"
           + "rojects/*/locations/*/knowledgeBases/*/d"
-          + "ocuments/*}:reload:\001*ZD\"?/v2/{name=proje"
-          + "cts/*/agent/knowledgeBases/*/documents/*"
-          + "}:reload:\001*\332A\020name,content_uri\312A&\n\010Docum"
-          + "ent\022\032KnowledgeOperationMetadata\032x\312A\031dial"
-          + "ogflow.googleapis.com\322AYhttps://www.goog"
-          + "leapis.com/auth/cloud-platform,https://w"
-          + "ww.googleapis.com/auth/dialogflowB\234\001\n\036co"
-          + "m.google.cloud.dialogflow.v2B\rDocumentPr"
-          + "otoP\001ZDgoogle.golang.org/genproto/google"
-          + "apis/cloud/dialogflow/v2;dialogflow\370\001\001\242\002"
-          + "\002DF\252\002\032Google.Cloud.Dialogflow.V2b\006proto3"
+          + "ocuments/*}:export:\001*\312A&\n\010Document\022\032Know"
+          + "ledgeOperationMetadata\032x\312A\031dialogflow.go"
+          + "ogleapis.com\322AYhttps://www.googleapis.co"
+          + "m/auth/cloud-platform,https://www.google"
+          + "apis.com/auth/dialogflowB\234\001\n\036com.google."
+          + "cloud.dialogflow.v2B\rDocumentProtoP\001ZDgo"
+          + "ogle.golang.org/genproto/googleapis/clou"
+          + "d/dialogflow/v2;dialogflow\370\001\001\242\002\002DF\252\002\032Goo"
+          + "gle.Cloud.Dialogflow.V2b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -204,6 +225,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               com.google.api.ClientProto.getDescriptor(),
               com.google.api.FieldBehaviorProto.getDescriptor(),
               com.google.api.ResourceProto.getDescriptor(),
+              com.google.cloud.dialogflow.v2.GcsProto.getDescriptor(),
               com.google.longrunning.OperationsProto.getDescriptor(),
               com.google.protobuf.FieldMaskProto.getDescriptor(),
               com.google.protobuf.TimestampProto.getDescriptor(),
@@ -256,7 +278,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2_ListDocumentsRequest_descriptor,
             new java.lang.String[] {
-              "Parent", "PageSize", "PageToken",
+              "Parent", "PageSize", "PageToken", "Filter",
             });
     internal_static_google_cloud_dialogflow_v2_ListDocumentsResponse_descriptor =
         getDescriptor().getMessageTypes().get(3);
@@ -296,10 +318,26 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2_ReloadDocumentRequest_descriptor,
             new java.lang.String[] {
-              "Name", "ContentUri", "Source",
+              "Name",
+              "ContentUri",
+              "ImportGcsCustomMetadata",
+              "SmartMessagingPartialUpdate",
+              "Source",
             });
-    internal_static_google_cloud_dialogflow_v2_KnowledgeOperationMetadata_descriptor =
+    internal_static_google_cloud_dialogflow_v2_ExportDocumentRequest_descriptor =
         getDescriptor().getMessageTypes().get(8);
+    internal_static_google_cloud_dialogflow_v2_ExportDocumentRequest_fieldAccessorTable =
+        new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+            internal_static_google_cloud_dialogflow_v2_ExportDocumentRequest_descriptor,
+            new java.lang.String[] {
+              "Name",
+              "GcsDestination",
+              "ExportFullContent",
+              "SmartMessagingPartialUpdate",
+              "Destination",
+            });
+    internal_static_google_cloud_dialogflow_v2_KnowledgeOperationMetadata_descriptor =
+        getDescriptor().getMessageTypes().get(9);
     internal_static_google_cloud_dialogflow_v2_KnowledgeOperationMetadata_fieldAccessorTable =
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2_KnowledgeOperationMetadata_descriptor,
@@ -322,6 +360,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
     com.google.api.ClientProto.getDescriptor();
     com.google.api.FieldBehaviorProto.getDescriptor();
     com.google.api.ResourceProto.getDescriptor();
+    com.google.cloud.dialogflow.v2.GcsProto.getDescriptor();
     com.google.longrunning.OperationsProto.getDescriptor();
     com.google.protobuf.FieldMaskProto.getDescriptor();
     com.google.protobuf.TimestampProto.getDescriptor();
diff --git a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ExportDocumentRequest.java b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ExportDocumentRequest.java
new file mode 100644
index 000000000..a24bde842
--- /dev/null
+++ b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ExportDocumentRequest.java
@@ -0,0 +1,1233 @@
+/*
+ * Copyright 2020 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.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/cloud/dialogflow/v2/document.proto
+
+package com.google.cloud.dialogflow.v2;
+
+/**
+ *
+ *
+ * <pre>
+ * Request message for [Documents.ExportDocument][google.cloud.dialogflow.v2.Documents.ExportDocument].
+ * </pre>
+ *
+ * Protobuf type {@code google.cloud.dialogflow.v2.ExportDocumentRequest}
+ */
+public final class ExportDocumentRequest extends com.google.protobuf.GeneratedMessageV3
+    implements
+    // @@protoc_insertion_point(message_implements:google.cloud.dialogflow.v2.ExportDocumentRequest)
+    ExportDocumentRequestOrBuilder {
+  private static final long serialVersionUID = 0L;
+  // Use ExportDocumentRequest.newBuilder() to construct.
+  private ExportDocumentRequest(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    super(builder);
+  }
+
+  private ExportDocumentRequest() {
+    name_ = "";
+  }
+
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(UnusedPrivateParameter unused) {
+    return new ExportDocumentRequest();
+  }
+
+  @java.lang.Override
+  public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
+    return this.unknownFields;
+  }
+
+  private ExportDocumentRequest(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    this();
+    if (extensionRegistry == null) {
+      throw new java.lang.NullPointerException();
+    }
+    com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+        com.google.protobuf.UnknownFieldSet.newBuilder();
+    try {
+      boolean done = false;
+      while (!done) {
+        int tag = input.readTag();
+        switch (tag) {
+          case 0:
+            done = true;
+            break;
+          case 10:
+            {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              name_ = s;
+              break;
+            }
+          case 18:
+            {
+              com.google.cloud.dialogflow.v2.GcsDestination.Builder subBuilder = null;
+              if (destinationCase_ == 2) {
+                subBuilder =
+                    ((com.google.cloud.dialogflow.v2.GcsDestination) destination_).toBuilder();
+              }
+              destination_ =
+                  input.readMessage(
+                      com.google.cloud.dialogflow.v2.GcsDestination.parser(), extensionRegistry);
+              if (subBuilder != null) {
+                subBuilder.mergeFrom((com.google.cloud.dialogflow.v2.GcsDestination) destination_);
+                destination_ = subBuilder.buildPartial();
+              }
+              destinationCase_ = 2;
+              break;
+            }
+          case 24:
+            {
+              exportFullContent_ = input.readBool();
+              break;
+            }
+          case 40:
+            {
+              smartMessagingPartialUpdate_ = input.readBool();
+              break;
+            }
+          default:
+            {
+              if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+        }
+      }
+    } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+      throw e.setUnfinishedMessage(this);
+    } catch (java.io.IOException e) {
+      throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
+    } finally {
+      this.unknownFields = unknownFields.build();
+      makeExtensionsImmutable();
+    }
+  }
+
+  public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+    return com.google.cloud.dialogflow.v2.DocumentProto
+        .internal_static_google_cloud_dialogflow_v2_ExportDocumentRequest_descriptor;
+  }
+
+  @java.lang.Override
+  protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internalGetFieldAccessorTable() {
+    return com.google.cloud.dialogflow.v2.DocumentProto
+        .internal_static_google_cloud_dialogflow_v2_ExportDocumentRequest_fieldAccessorTable
+        .ensureFieldAccessorsInitialized(
+            com.google.cloud.dialogflow.v2.ExportDocumentRequest.class,
+            com.google.cloud.dialogflow.v2.ExportDocumentRequest.Builder.class);
+  }
+
+  private int destinationCase_ = 0;
+  private java.lang.Object destination_;
+
+  public enum DestinationCase
+      implements
+          com.google.protobuf.Internal.EnumLite,
+          com.google.protobuf.AbstractMessage.InternalOneOfEnum {
+    GCS_DESTINATION(2),
+    DESTINATION_NOT_SET(0);
+    private final int value;
+
+    private DestinationCase(int value) {
+      this.value = value;
+    }
+    /**
+     * @param value The number of the enum to look for.
+     * @return The enum associated with the given number.
+     * @deprecated Use {@link #forNumber(int)} instead.
+     */
+    @java.lang.Deprecated
+    public static DestinationCase valueOf(int value) {
+      return forNumber(value);
+    }
+
+    public static DestinationCase forNumber(int value) {
+      switch (value) {
+        case 2:
+          return GCS_DESTINATION;
+        case 0:
+          return DESTINATION_NOT_SET;
+        default:
+          return null;
+      }
+    }
+
+    public int getNumber() {
+      return this.value;
+    }
+  };
+
+  public DestinationCase getDestinationCase() {
+    return DestinationCase.forNumber(destinationCase_);
+  }
+
+  public static final int NAME_FIELD_NUMBER = 1;
+  private volatile java.lang.Object name_;
+  /**
+   *
+   *
+   * <pre>
+   * Required. The name of the document to export.
+   * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
+   * ID&gt;/knowledgeBases/&lt;Knowledge Base ID&gt;/documents/&lt;Document ID&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string name = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The name.
+   */
+  @java.lang.Override
+  public java.lang.String getName() {
+    java.lang.Object ref = name_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      name_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Required. The name of the document to export.
+   * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
+   * ID&gt;/knowledgeBases/&lt;Knowledge Base ID&gt;/documents/&lt;Document ID&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string name = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The bytes for name.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getNameBytes() {
+    java.lang.Object ref = name_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      name_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
+  public static final int GCS_DESTINATION_FIELD_NUMBER = 2;
+  /**
+   *
+   *
+   * <pre>
+   * Cloud Storage file path to export the document.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2.GcsDestination gcs_destination = 2;</code>
+   *
+   * @return Whether the gcsDestination field is set.
+   */
+  @java.lang.Override
+  public boolean hasGcsDestination() {
+    return destinationCase_ == 2;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Cloud Storage file path to export the document.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2.GcsDestination gcs_destination = 2;</code>
+   *
+   * @return The gcsDestination.
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2.GcsDestination getGcsDestination() {
+    if (destinationCase_ == 2) {
+      return (com.google.cloud.dialogflow.v2.GcsDestination) destination_;
+    }
+    return com.google.cloud.dialogflow.v2.GcsDestination.getDefaultInstance();
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Cloud Storage file path to export the document.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2.GcsDestination gcs_destination = 2;</code>
+   */
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2.GcsDestinationOrBuilder getGcsDestinationOrBuilder() {
+    if (destinationCase_ == 2) {
+      return (com.google.cloud.dialogflow.v2.GcsDestination) destination_;
+    }
+    return com.google.cloud.dialogflow.v2.GcsDestination.getDefaultInstance();
+  }
+
+  public static final int EXPORT_FULL_CONTENT_FIELD_NUMBER = 3;
+  private boolean exportFullContent_;
+  /**
+   *
+   *
+   * <pre>
+   * When enabled, export the full content of the document including empirical
+   * probability.
+   * </pre>
+   *
+   * <code>bool export_full_content = 3;</code>
+   *
+   * @return The exportFullContent.
+   */
+  @java.lang.Override
+  public boolean getExportFullContent() {
+    return exportFullContent_;
+  }
+
+  public static final int SMART_MESSAGING_PARTIAL_UPDATE_FIELD_NUMBER = 5;
+  private boolean smartMessagingPartialUpdate_;
+  /**
+   *
+   *
+   * <pre>
+   * When enabled, export the smart messaging allowlist document for partial
+   * update.
+   * </pre>
+   *
+   * <code>bool smart_messaging_partial_update = 5;</code>
+   *
+   * @return The smartMessagingPartialUpdate.
+   */
+  @java.lang.Override
+  public boolean getSmartMessagingPartialUpdate() {
+    return smartMessagingPartialUpdate_;
+  }
+
+  private byte memoizedIsInitialized = -1;
+
+  @java.lang.Override
+  public final boolean isInitialized() {
+    byte isInitialized = memoizedIsInitialized;
+    if (isInitialized == 1) return true;
+    if (isInitialized == 0) return false;
+
+    memoizedIsInitialized = 1;
+    return true;
+  }
+
+  @java.lang.Override
+  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, name_);
+    }
+    if (destinationCase_ == 2) {
+      output.writeMessage(2, (com.google.cloud.dialogflow.v2.GcsDestination) destination_);
+    }
+    if (exportFullContent_ != false) {
+      output.writeBool(3, exportFullContent_);
+    }
+    if (smartMessagingPartialUpdate_ != false) {
+      output.writeBool(5, smartMessagingPartialUpdate_);
+    }
+    unknownFields.writeTo(output);
+  }
+
+  @java.lang.Override
+  public int getSerializedSize() {
+    int size = memoizedSize;
+    if (size != -1) return size;
+
+    size = 0;
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(name_)) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, name_);
+    }
+    if (destinationCase_ == 2) {
+      size +=
+          com.google.protobuf.CodedOutputStream.computeMessageSize(
+              2, (com.google.cloud.dialogflow.v2.GcsDestination) destination_);
+    }
+    if (exportFullContent_ != false) {
+      size += com.google.protobuf.CodedOutputStream.computeBoolSize(3, exportFullContent_);
+    }
+    if (smartMessagingPartialUpdate_ != false) {
+      size +=
+          com.google.protobuf.CodedOutputStream.computeBoolSize(5, smartMessagingPartialUpdate_);
+    }
+    size += unknownFields.getSerializedSize();
+    memoizedSize = size;
+    return size;
+  }
+
+  @java.lang.Override
+  public boolean equals(final java.lang.Object obj) {
+    if (obj == this) {
+      return true;
+    }
+    if (!(obj instanceof com.google.cloud.dialogflow.v2.ExportDocumentRequest)) {
+      return super.equals(obj);
+    }
+    com.google.cloud.dialogflow.v2.ExportDocumentRequest other =
+        (com.google.cloud.dialogflow.v2.ExportDocumentRequest) obj;
+
+    if (!getName().equals(other.getName())) return false;
+    if (getExportFullContent() != other.getExportFullContent()) return false;
+    if (getSmartMessagingPartialUpdate() != other.getSmartMessagingPartialUpdate()) return false;
+    if (!getDestinationCase().equals(other.getDestinationCase())) return false;
+    switch (destinationCase_) {
+      case 2:
+        if (!getGcsDestination().equals(other.getGcsDestination())) return false;
+        break;
+      case 0:
+      default:
+    }
+    if (!unknownFields.equals(other.unknownFields)) return false;
+    return true;
+  }
+
+  @java.lang.Override
+  public int hashCode() {
+    if (memoizedHashCode != 0) {
+      return memoizedHashCode;
+    }
+    int hash = 41;
+    hash = (19 * hash) + getDescriptor().hashCode();
+    hash = (37 * hash) + NAME_FIELD_NUMBER;
+    hash = (53 * hash) + getName().hashCode();
+    hash = (37 * hash) + EXPORT_FULL_CONTENT_FIELD_NUMBER;
+    hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(getExportFullContent());
+    hash = (37 * hash) + SMART_MESSAGING_PARTIAL_UPDATE_FIELD_NUMBER;
+    hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(getSmartMessagingPartialUpdate());
+    switch (destinationCase_) {
+      case 2:
+        hash = (37 * hash) + GCS_DESTINATION_FIELD_NUMBER;
+        hash = (53 * hash) + getGcsDestination().hashCode();
+        break;
+      case 0:
+      default:
+    }
+    hash = (29 * hash) + unknownFields.hashCode();
+    memoizedHashCode = hash;
+    return hash;
+  }
+
+  public static com.google.cloud.dialogflow.v2.ExportDocumentRequest parseFrom(
+      java.nio.ByteBuffer data) throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.dialogflow.v2.ExportDocumentRequest parseFrom(
+      java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2.ExportDocumentRequest parseFrom(
+      com.google.protobuf.ByteString data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.dialogflow.v2.ExportDocumentRequest parseFrom(
+      com.google.protobuf.ByteString data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2.ExportDocumentRequest parseFrom(byte[] data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.dialogflow.v2.ExportDocumentRequest parseFrom(
+      byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2.ExportDocumentRequest parseFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.dialogflow.v2.ExportDocumentRequest parseFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2.ExportDocumentRequest parseDelimitedFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.dialogflow.v2.ExportDocumentRequest parseDelimitedFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2.ExportDocumentRequest parseFrom(
+      com.google.protobuf.CodedInputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.dialogflow.v2.ExportDocumentRequest parseFrom(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  @java.lang.Override
+  public Builder newBuilderForType() {
+    return newBuilder();
+  }
+
+  public static Builder newBuilder() {
+    return DEFAULT_INSTANCE.toBuilder();
+  }
+
+  public static Builder newBuilder(com.google.cloud.dialogflow.v2.ExportDocumentRequest prototype) {
+    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+  }
+
+  @java.lang.Override
+  public Builder toBuilder() {
+    return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
+  }
+
+  @java.lang.Override
+  protected Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+    Builder builder = new Builder(parent);
+    return builder;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Request message for [Documents.ExportDocument][google.cloud.dialogflow.v2.Documents.ExportDocument].
+   * </pre>
+   *
+   * Protobuf type {@code google.cloud.dialogflow.v2.ExportDocumentRequest}
+   */
+  public static final class Builder extends com.google.protobuf.GeneratedMessageV3.Builder<Builder>
+      implements
+      // @@protoc_insertion_point(builder_implements:google.cloud.dialogflow.v2.ExportDocumentRequest)
+      com.google.cloud.dialogflow.v2.ExportDocumentRequestOrBuilder {
+    public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+      return com.google.cloud.dialogflow.v2.DocumentProto
+          .internal_static_google_cloud_dialogflow_v2_ExportDocumentRequest_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.google.cloud.dialogflow.v2.DocumentProto
+          .internal_static_google_cloud_dialogflow_v2_ExportDocumentRequest_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.google.cloud.dialogflow.v2.ExportDocumentRequest.class,
+              com.google.cloud.dialogflow.v2.ExportDocumentRequest.Builder.class);
+    }
+
+    // Construct using com.google.cloud.dialogflow.v2.ExportDocumentRequest.newBuilder()
+    private Builder() {
+      maybeForceBuilderInitialization();
+    }
+
+    private Builder(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      super(parent);
+      maybeForceBuilderInitialization();
+    }
+
+    private void maybeForceBuilderInitialization() {
+      if (com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders) {}
+    }
+
+    @java.lang.Override
+    public Builder clear() {
+      super.clear();
+      name_ = "";
+
+      exportFullContent_ = false;
+
+      smartMessagingPartialUpdate_ = false;
+
+      destinationCase_ = 0;
+      destination_ = null;
+      return this;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
+      return com.google.cloud.dialogflow.v2.DocumentProto
+          .internal_static_google_cloud_dialogflow_v2_ExportDocumentRequest_descriptor;
+    }
+
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2.ExportDocumentRequest getDefaultInstanceForType() {
+      return com.google.cloud.dialogflow.v2.ExportDocumentRequest.getDefaultInstance();
+    }
+
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2.ExportDocumentRequest build() {
+      com.google.cloud.dialogflow.v2.ExportDocumentRequest result = buildPartial();
+      if (!result.isInitialized()) {
+        throw newUninitializedMessageException(result);
+      }
+      return result;
+    }
+
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2.ExportDocumentRequest buildPartial() {
+      com.google.cloud.dialogflow.v2.ExportDocumentRequest result =
+          new com.google.cloud.dialogflow.v2.ExportDocumentRequest(this);
+      result.name_ = name_;
+      if (destinationCase_ == 2) {
+        if (gcsDestinationBuilder_ == null) {
+          result.destination_ = destination_;
+        } else {
+          result.destination_ = gcsDestinationBuilder_.build();
+        }
+      }
+      result.exportFullContent_ = exportFullContent_;
+      result.smartMessagingPartialUpdate_ = smartMessagingPartialUpdate_;
+      result.destinationCase_ = destinationCase_;
+      onBuilt();
+      return result;
+    }
+
+    @java.lang.Override
+    public Builder clone() {
+      return super.clone();
+    }
+
+    @java.lang.Override
+    public Builder setField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.setField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder clearField(com.google.protobuf.Descriptors.FieldDescriptor field) {
+      return super.clearField(field);
+    }
+
+    @java.lang.Override
+    public Builder clearOneof(com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+      return super.clearOneof(oneof);
+    }
+
+    @java.lang.Override
+    public Builder setRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, int index, java.lang.Object value) {
+      return super.setRepeatedField(field, index, value);
+    }
+
+    @java.lang.Override
+    public Builder addRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.addRepeatedField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(com.google.protobuf.Message other) {
+      if (other instanceof com.google.cloud.dialogflow.v2.ExportDocumentRequest) {
+        return mergeFrom((com.google.cloud.dialogflow.v2.ExportDocumentRequest) other);
+      } else {
+        super.mergeFrom(other);
+        return this;
+      }
+    }
+
+    public Builder mergeFrom(com.google.cloud.dialogflow.v2.ExportDocumentRequest other) {
+      if (other == com.google.cloud.dialogflow.v2.ExportDocumentRequest.getDefaultInstance())
+        return this;
+      if (!other.getName().isEmpty()) {
+        name_ = other.name_;
+        onChanged();
+      }
+      if (other.getExportFullContent() != false) {
+        setExportFullContent(other.getExportFullContent());
+      }
+      if (other.getSmartMessagingPartialUpdate() != false) {
+        setSmartMessagingPartialUpdate(other.getSmartMessagingPartialUpdate());
+      }
+      switch (other.getDestinationCase()) {
+        case GCS_DESTINATION:
+          {
+            mergeGcsDestination(other.getGcsDestination());
+            break;
+          }
+        case DESTINATION_NOT_SET:
+          {
+            break;
+          }
+      }
+      this.mergeUnknownFields(other.unknownFields);
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final boolean isInitialized() {
+      return true;
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      com.google.cloud.dialogflow.v2.ExportDocumentRequest parsedMessage = null;
+      try {
+        parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        parsedMessage =
+            (com.google.cloud.dialogflow.v2.ExportDocumentRequest) e.getUnfinishedMessage();
+        throw e.unwrapIOException();
+      } finally {
+        if (parsedMessage != null) {
+          mergeFrom(parsedMessage);
+        }
+      }
+      return this;
+    }
+
+    private int destinationCase_ = 0;
+    private java.lang.Object destination_;
+
+    public DestinationCase getDestinationCase() {
+      return DestinationCase.forNumber(destinationCase_);
+    }
+
+    public Builder clearDestination() {
+      destinationCase_ = 0;
+      destination_ = null;
+      onChanged();
+      return this;
+    }
+
+    private java.lang.Object name_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * Required. The name of the document to export.
+     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
+     * ID&gt;/knowledgeBases/&lt;Knowledge Base ID&gt;/documents/&lt;Document ID&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string name = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return The name.
+     */
+    public java.lang.String getName() {
+      java.lang.Object ref = name_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        name_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The name of the document to export.
+     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
+     * ID&gt;/knowledgeBases/&lt;Knowledge Base ID&gt;/documents/&lt;Document ID&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string name = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return The bytes for name.
+     */
+    public com.google.protobuf.ByteString getNameBytes() {
+      java.lang.Object ref = name_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        name_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The name of the document to export.
+     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
+     * ID&gt;/knowledgeBases/&lt;Knowledge Base ID&gt;/documents/&lt;Document ID&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string name = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param value The name to set.
+     * @return This builder for chaining.
+     */
+    public Builder setName(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      name_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The name of the document to export.
+     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
+     * ID&gt;/knowledgeBases/&lt;Knowledge Base ID&gt;/documents/&lt;Document ID&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string name = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearName() {
+
+      name_ = getDefaultInstance().getName();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Required. The name of the document to export.
+     * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
+     * ID&gt;/knowledgeBases/&lt;Knowledge Base ID&gt;/documents/&lt;Document ID&gt;`.
+     * </pre>
+     *
+     * <code>
+     * string name = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param value The bytes for name to set.
+     * @return This builder for chaining.
+     */
+    public Builder setNameBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+
+      name_ = value;
+      onChanged();
+      return this;
+    }
+
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2.GcsDestination,
+            com.google.cloud.dialogflow.v2.GcsDestination.Builder,
+            com.google.cloud.dialogflow.v2.GcsDestinationOrBuilder>
+        gcsDestinationBuilder_;
+    /**
+     *
+     *
+     * <pre>
+     * Cloud Storage file path to export the document.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2.GcsDestination gcs_destination = 2;</code>
+     *
+     * @return Whether the gcsDestination field is set.
+     */
+    @java.lang.Override
+    public boolean hasGcsDestination() {
+      return destinationCase_ == 2;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Cloud Storage file path to export the document.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2.GcsDestination gcs_destination = 2;</code>
+     *
+     * @return The gcsDestination.
+     */
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2.GcsDestination getGcsDestination() {
+      if (gcsDestinationBuilder_ == null) {
+        if (destinationCase_ == 2) {
+          return (com.google.cloud.dialogflow.v2.GcsDestination) destination_;
+        }
+        return com.google.cloud.dialogflow.v2.GcsDestination.getDefaultInstance();
+      } else {
+        if (destinationCase_ == 2) {
+          return gcsDestinationBuilder_.getMessage();
+        }
+        return com.google.cloud.dialogflow.v2.GcsDestination.getDefaultInstance();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Cloud Storage file path to export the document.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2.GcsDestination gcs_destination = 2;</code>
+     */
+    public Builder setGcsDestination(com.google.cloud.dialogflow.v2.GcsDestination value) {
+      if (gcsDestinationBuilder_ == null) {
+        if (value == null) {
+          throw new NullPointerException();
+        }
+        destination_ = value;
+        onChanged();
+      } else {
+        gcsDestinationBuilder_.setMessage(value);
+      }
+      destinationCase_ = 2;
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Cloud Storage file path to export the document.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2.GcsDestination gcs_destination = 2;</code>
+     */
+    public Builder setGcsDestination(
+        com.google.cloud.dialogflow.v2.GcsDestination.Builder builderForValue) {
+      if (gcsDestinationBuilder_ == null) {
+        destination_ = builderForValue.build();
+        onChanged();
+      } else {
+        gcsDestinationBuilder_.setMessage(builderForValue.build());
+      }
+      destinationCase_ = 2;
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Cloud Storage file path to export the document.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2.GcsDestination gcs_destination = 2;</code>
+     */
+    public Builder mergeGcsDestination(com.google.cloud.dialogflow.v2.GcsDestination value) {
+      if (gcsDestinationBuilder_ == null) {
+        if (destinationCase_ == 2
+            && destination_ != com.google.cloud.dialogflow.v2.GcsDestination.getDefaultInstance()) {
+          destination_ =
+              com.google.cloud.dialogflow.v2.GcsDestination.newBuilder(
+                      (com.google.cloud.dialogflow.v2.GcsDestination) destination_)
+                  .mergeFrom(value)
+                  .buildPartial();
+        } else {
+          destination_ = value;
+        }
+        onChanged();
+      } else {
+        if (destinationCase_ == 2) {
+          gcsDestinationBuilder_.mergeFrom(value);
+        }
+        gcsDestinationBuilder_.setMessage(value);
+      }
+      destinationCase_ = 2;
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Cloud Storage file path to export the document.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2.GcsDestination gcs_destination = 2;</code>
+     */
+    public Builder clearGcsDestination() {
+      if (gcsDestinationBuilder_ == null) {
+        if (destinationCase_ == 2) {
+          destinationCase_ = 0;
+          destination_ = null;
+          onChanged();
+        }
+      } else {
+        if (destinationCase_ == 2) {
+          destinationCase_ = 0;
+          destination_ = null;
+        }
+        gcsDestinationBuilder_.clear();
+      }
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Cloud Storage file path to export the document.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2.GcsDestination gcs_destination = 2;</code>
+     */
+    public com.google.cloud.dialogflow.v2.GcsDestination.Builder getGcsDestinationBuilder() {
+      return getGcsDestinationFieldBuilder().getBuilder();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Cloud Storage file path to export the document.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2.GcsDestination gcs_destination = 2;</code>
+     */
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2.GcsDestinationOrBuilder getGcsDestinationOrBuilder() {
+      if ((destinationCase_ == 2) && (gcsDestinationBuilder_ != null)) {
+        return gcsDestinationBuilder_.getMessageOrBuilder();
+      } else {
+        if (destinationCase_ == 2) {
+          return (com.google.cloud.dialogflow.v2.GcsDestination) destination_;
+        }
+        return com.google.cloud.dialogflow.v2.GcsDestination.getDefaultInstance();
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Cloud Storage file path to export the document.
+     * </pre>
+     *
+     * <code>.google.cloud.dialogflow.v2.GcsDestination gcs_destination = 2;</code>
+     */
+    private com.google.protobuf.SingleFieldBuilderV3<
+            com.google.cloud.dialogflow.v2.GcsDestination,
+            com.google.cloud.dialogflow.v2.GcsDestination.Builder,
+            com.google.cloud.dialogflow.v2.GcsDestinationOrBuilder>
+        getGcsDestinationFieldBuilder() {
+      if (gcsDestinationBuilder_ == null) {
+        if (!(destinationCase_ == 2)) {
+          destination_ = com.google.cloud.dialogflow.v2.GcsDestination.getDefaultInstance();
+        }
+        gcsDestinationBuilder_ =
+            new com.google.protobuf.SingleFieldBuilderV3<
+                com.google.cloud.dialogflow.v2.GcsDestination,
+                com.google.cloud.dialogflow.v2.GcsDestination.Builder,
+                com.google.cloud.dialogflow.v2.GcsDestinationOrBuilder>(
+                (com.google.cloud.dialogflow.v2.GcsDestination) destination_,
+                getParentForChildren(),
+                isClean());
+        destination_ = null;
+      }
+      destinationCase_ = 2;
+      onChanged();
+      ;
+      return gcsDestinationBuilder_;
+    }
+
+    private boolean exportFullContent_;
+    /**
+     *
+     *
+     * <pre>
+     * When enabled, export the full content of the document including empirical
+     * probability.
+     * </pre>
+     *
+     * <code>bool export_full_content = 3;</code>
+     *
+     * @return The exportFullContent.
+     */
+    @java.lang.Override
+    public boolean getExportFullContent() {
+      return exportFullContent_;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * When enabled, export the full content of the document including empirical
+     * probability.
+     * </pre>
+     *
+     * <code>bool export_full_content = 3;</code>
+     *
+     * @param value The exportFullContent to set.
+     * @return This builder for chaining.
+     */
+    public Builder setExportFullContent(boolean value) {
+
+      exportFullContent_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * When enabled, export the full content of the document including empirical
+     * probability.
+     * </pre>
+     *
+     * <code>bool export_full_content = 3;</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearExportFullContent() {
+
+      exportFullContent_ = false;
+      onChanged();
+      return this;
+    }
+
+    private boolean smartMessagingPartialUpdate_;
+    /**
+     *
+     *
+     * <pre>
+     * When enabled, export the smart messaging allowlist document for partial
+     * update.
+     * </pre>
+     *
+     * <code>bool smart_messaging_partial_update = 5;</code>
+     *
+     * @return The smartMessagingPartialUpdate.
+     */
+    @java.lang.Override
+    public boolean getSmartMessagingPartialUpdate() {
+      return smartMessagingPartialUpdate_;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * When enabled, export the smart messaging allowlist document for partial
+     * update.
+     * </pre>
+     *
+     * <code>bool smart_messaging_partial_update = 5;</code>
+     *
+     * @param value The smartMessagingPartialUpdate to set.
+     * @return This builder for chaining.
+     */
+    public Builder setSmartMessagingPartialUpdate(boolean value) {
+
+      smartMessagingPartialUpdate_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * When enabled, export the smart messaging allowlist document for partial
+     * update.
+     * </pre>
+     *
+     * <code>bool smart_messaging_partial_update = 5;</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearSmartMessagingPartialUpdate() {
+
+      smartMessagingPartialUpdate_ = false;
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.setUnknownFields(unknownFields);
+    }
+
+    @java.lang.Override
+    public final Builder mergeUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.mergeUnknownFields(unknownFields);
+    }
+
+    // @@protoc_insertion_point(builder_scope:google.cloud.dialogflow.v2.ExportDocumentRequest)
+  }
+
+  // @@protoc_insertion_point(class_scope:google.cloud.dialogflow.v2.ExportDocumentRequest)
+  private static final com.google.cloud.dialogflow.v2.ExportDocumentRequest DEFAULT_INSTANCE;
+
+  static {
+    DEFAULT_INSTANCE = new com.google.cloud.dialogflow.v2.ExportDocumentRequest();
+  }
+
+  public static com.google.cloud.dialogflow.v2.ExportDocumentRequest getDefaultInstance() {
+    return DEFAULT_INSTANCE;
+  }
+
+  private static final com.google.protobuf.Parser<ExportDocumentRequest> PARSER =
+      new com.google.protobuf.AbstractParser<ExportDocumentRequest>() {
+        @java.lang.Override
+        public ExportDocumentRequest parsePartialFrom(
+            com.google.protobuf.CodedInputStream input,
+            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+            throws com.google.protobuf.InvalidProtocolBufferException {
+          return new ExportDocumentRequest(input, extensionRegistry);
+        }
+      };
+
+  public static com.google.protobuf.Parser<ExportDocumentRequest> parser() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.protobuf.Parser<ExportDocumentRequest> getParserForType() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2.ExportDocumentRequest getDefaultInstanceForType() {
+    return DEFAULT_INSTANCE;
+  }
+}
diff --git a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ExportDocumentRequestOrBuilder.java b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ExportDocumentRequestOrBuilder.java
new file mode 100644
index 000000000..fc8e25f0c
--- /dev/null
+++ b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ExportDocumentRequestOrBuilder.java
@@ -0,0 +1,123 @@
+/*
+ * Copyright 2020 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.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/cloud/dialogflow/v2/document.proto
+
+package com.google.cloud.dialogflow.v2;
+
+public interface ExportDocumentRequestOrBuilder
+    extends
+    // @@protoc_insertion_point(interface_extends:google.cloud.dialogflow.v2.ExportDocumentRequest)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   *
+   *
+   * <pre>
+   * Required. The name of the document to export.
+   * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
+   * ID&gt;/knowledgeBases/&lt;Knowledge Base ID&gt;/documents/&lt;Document ID&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string name = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The name.
+   */
+  java.lang.String getName();
+  /**
+   *
+   *
+   * <pre>
+   * Required. The name of the document to export.
+   * Format: `projects/&lt;Project ID&gt;/locations/&lt;Location
+   * ID&gt;/knowledgeBases/&lt;Knowledge Base ID&gt;/documents/&lt;Document ID&gt;`.
+   * </pre>
+   *
+   * <code>
+   * string name = 1 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The bytes for name.
+   */
+  com.google.protobuf.ByteString getNameBytes();
+
+  /**
+   *
+   *
+   * <pre>
+   * Cloud Storage file path to export the document.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2.GcsDestination gcs_destination = 2;</code>
+   *
+   * @return Whether the gcsDestination field is set.
+   */
+  boolean hasGcsDestination();
+  /**
+   *
+   *
+   * <pre>
+   * Cloud Storage file path to export the document.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2.GcsDestination gcs_destination = 2;</code>
+   *
+   * @return The gcsDestination.
+   */
+  com.google.cloud.dialogflow.v2.GcsDestination getGcsDestination();
+  /**
+   *
+   *
+   * <pre>
+   * Cloud Storage file path to export the document.
+   * </pre>
+   *
+   * <code>.google.cloud.dialogflow.v2.GcsDestination gcs_destination = 2;</code>
+   */
+  com.google.cloud.dialogflow.v2.GcsDestinationOrBuilder getGcsDestinationOrBuilder();
+
+  /**
+   *
+   *
+   * <pre>
+   * When enabled, export the full content of the document including empirical
+   * probability.
+   * </pre>
+   *
+   * <code>bool export_full_content = 3;</code>
+   *
+   * @return The exportFullContent.
+   */
+  boolean getExportFullContent();
+
+  /**
+   *
+   *
+   * <pre>
+   * When enabled, export the smart messaging allowlist document for partial
+   * update.
+   * </pre>
+   *
+   * <code>bool smart_messaging_partial_update = 5;</code>
+   *
+   * @return The smartMessagingPartialUpdate.
+   */
+  boolean getSmartMessagingPartialUpdate();
+
+  public com.google.cloud.dialogflow.v2.ExportDocumentRequest.DestinationCase getDestinationCase();
+}
diff --git a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/GcsDestination.java b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/GcsDestination.java
new file mode 100644
index 000000000..e716e2c2f
--- /dev/null
+++ b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/GcsDestination.java
@@ -0,0 +1,662 @@
+/*
+ * Copyright 2020 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.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/cloud/dialogflow/v2/gcs.proto
+
+package com.google.cloud.dialogflow.v2;
+
+/**
+ *
+ *
+ * <pre>
+ * Google Cloud Storage location for the output.
+ * </pre>
+ *
+ * Protobuf type {@code google.cloud.dialogflow.v2.GcsDestination}
+ */
+public final class GcsDestination extends com.google.protobuf.GeneratedMessageV3
+    implements
+    // @@protoc_insertion_point(message_implements:google.cloud.dialogflow.v2.GcsDestination)
+    GcsDestinationOrBuilder {
+  private static final long serialVersionUID = 0L;
+  // Use GcsDestination.newBuilder() to construct.
+  private GcsDestination(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    super(builder);
+  }
+
+  private GcsDestination() {
+    uri_ = "";
+  }
+
+  @java.lang.Override
+  @SuppressWarnings({"unused"})
+  protected java.lang.Object newInstance(UnusedPrivateParameter unused) {
+    return new GcsDestination();
+  }
+
+  @java.lang.Override
+  public final com.google.protobuf.UnknownFieldSet getUnknownFields() {
+    return this.unknownFields;
+  }
+
+  private GcsDestination(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    this();
+    if (extensionRegistry == null) {
+      throw new java.lang.NullPointerException();
+    }
+    com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+        com.google.protobuf.UnknownFieldSet.newBuilder();
+    try {
+      boolean done = false;
+      while (!done) {
+        int tag = input.readTag();
+        switch (tag) {
+          case 0:
+            done = true;
+            break;
+          case 10:
+            {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              uri_ = s;
+              break;
+            }
+          default:
+            {
+              if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+        }
+      }
+    } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+      throw e.setUnfinishedMessage(this);
+    } catch (java.io.IOException e) {
+      throw new com.google.protobuf.InvalidProtocolBufferException(e).setUnfinishedMessage(this);
+    } finally {
+      this.unknownFields = unknownFields.build();
+      makeExtensionsImmutable();
+    }
+  }
+
+  public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+    return com.google.cloud.dialogflow.v2.GcsProto
+        .internal_static_google_cloud_dialogflow_v2_GcsDestination_descriptor;
+  }
+
+  @java.lang.Override
+  protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internalGetFieldAccessorTable() {
+    return com.google.cloud.dialogflow.v2.GcsProto
+        .internal_static_google_cloud_dialogflow_v2_GcsDestination_fieldAccessorTable
+        .ensureFieldAccessorsInitialized(
+            com.google.cloud.dialogflow.v2.GcsDestination.class,
+            com.google.cloud.dialogflow.v2.GcsDestination.Builder.class);
+  }
+
+  public static final int URI_FIELD_NUMBER = 1;
+  private volatile java.lang.Object uri_;
+  /**
+   *
+   *
+   * <pre>
+   * The Google Cloud Storage URIs for the output. A URI is of the
+   * form:
+   *   gs://bucket/object-prefix-or-name
+   * Whether a prefix or name is used depends on the use case. The requesting
+   * user must have "write-permission" to the bucket.
+   * </pre>
+   *
+   * <code>string uri = 1;</code>
+   *
+   * @return The uri.
+   */
+  @java.lang.Override
+  public java.lang.String getUri() {
+    java.lang.Object ref = uri_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      uri_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The Google Cloud Storage URIs for the output. A URI is of the
+   * form:
+   *   gs://bucket/object-prefix-or-name
+   * Whether a prefix or name is used depends on the use case. The requesting
+   * user must have "write-permission" to the bucket.
+   * </pre>
+   *
+   * <code>string uri = 1;</code>
+   *
+   * @return The bytes for uri.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getUriBytes() {
+    java.lang.Object ref = uri_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      uri_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
+  private byte memoizedIsInitialized = -1;
+
+  @java.lang.Override
+  public final boolean isInitialized() {
+    byte isInitialized = memoizedIsInitialized;
+    if (isInitialized == 1) return true;
+    if (isInitialized == 0) return false;
+
+    memoizedIsInitialized = 1;
+    return true;
+  }
+
+  @java.lang.Override
+  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(uri_)) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 1, uri_);
+    }
+    unknownFields.writeTo(output);
+  }
+
+  @java.lang.Override
+  public int getSerializedSize() {
+    int size = memoizedSize;
+    if (size != -1) return size;
+
+    size = 0;
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(uri_)) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, uri_);
+    }
+    size += unknownFields.getSerializedSize();
+    memoizedSize = size;
+    return size;
+  }
+
+  @java.lang.Override
+  public boolean equals(final java.lang.Object obj) {
+    if (obj == this) {
+      return true;
+    }
+    if (!(obj instanceof com.google.cloud.dialogflow.v2.GcsDestination)) {
+      return super.equals(obj);
+    }
+    com.google.cloud.dialogflow.v2.GcsDestination other =
+        (com.google.cloud.dialogflow.v2.GcsDestination) obj;
+
+    if (!getUri().equals(other.getUri())) return false;
+    if (!unknownFields.equals(other.unknownFields)) return false;
+    return true;
+  }
+
+  @java.lang.Override
+  public int hashCode() {
+    if (memoizedHashCode != 0) {
+      return memoizedHashCode;
+    }
+    int hash = 41;
+    hash = (19 * hash) + getDescriptor().hashCode();
+    hash = (37 * hash) + URI_FIELD_NUMBER;
+    hash = (53 * hash) + getUri().hashCode();
+    hash = (29 * hash) + unknownFields.hashCode();
+    memoizedHashCode = hash;
+    return hash;
+  }
+
+  public static com.google.cloud.dialogflow.v2.GcsDestination parseFrom(java.nio.ByteBuffer data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.dialogflow.v2.GcsDestination parseFrom(
+      java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2.GcsDestination parseFrom(
+      com.google.protobuf.ByteString data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.dialogflow.v2.GcsDestination parseFrom(
+      com.google.protobuf.ByteString data,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2.GcsDestination parseFrom(byte[] data)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data);
+  }
+
+  public static com.google.cloud.dialogflow.v2.GcsDestination parseFrom(
+      byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws com.google.protobuf.InvalidProtocolBufferException {
+    return PARSER.parseFrom(data, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2.GcsDestination parseFrom(java.io.InputStream input)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.dialogflow.v2.GcsDestination parseFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2.GcsDestination parseDelimitedFrom(
+      java.io.InputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.dialogflow.v2.GcsDestination parseDelimitedFrom(
+      java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  public static com.google.cloud.dialogflow.v2.GcsDestination parseFrom(
+      com.google.protobuf.CodedInputStream input) throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(PARSER, input);
+  }
+
+  public static com.google.cloud.dialogflow.v2.GcsDestination parseFrom(
+      com.google.protobuf.CodedInputStream input,
+      com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+      throws java.io.IOException {
+    return com.google.protobuf.GeneratedMessageV3.parseWithIOException(
+        PARSER, input, extensionRegistry);
+  }
+
+  @java.lang.Override
+  public Builder newBuilderForType() {
+    return newBuilder();
+  }
+
+  public static Builder newBuilder() {
+    return DEFAULT_INSTANCE.toBuilder();
+  }
+
+  public static Builder newBuilder(com.google.cloud.dialogflow.v2.GcsDestination prototype) {
+    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+  }
+
+  @java.lang.Override
+  public Builder toBuilder() {
+    return this == DEFAULT_INSTANCE ? new Builder() : new Builder().mergeFrom(this);
+  }
+
+  @java.lang.Override
+  protected Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+    Builder builder = new Builder(parent);
+    return builder;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * Google Cloud Storage location for the output.
+   * </pre>
+   *
+   * Protobuf type {@code google.cloud.dialogflow.v2.GcsDestination}
+   */
+  public static final class Builder extends com.google.protobuf.GeneratedMessageV3.Builder<Builder>
+      implements
+      // @@protoc_insertion_point(builder_implements:google.cloud.dialogflow.v2.GcsDestination)
+      com.google.cloud.dialogflow.v2.GcsDestinationOrBuilder {
+    public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
+      return com.google.cloud.dialogflow.v2.GcsProto
+          .internal_static_google_cloud_dialogflow_v2_GcsDestination_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.google.cloud.dialogflow.v2.GcsProto
+          .internal_static_google_cloud_dialogflow_v2_GcsDestination_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.google.cloud.dialogflow.v2.GcsDestination.class,
+              com.google.cloud.dialogflow.v2.GcsDestination.Builder.class);
+    }
+
+    // Construct using com.google.cloud.dialogflow.v2.GcsDestination.newBuilder()
+    private Builder() {
+      maybeForceBuilderInitialization();
+    }
+
+    private Builder(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      super(parent);
+      maybeForceBuilderInitialization();
+    }
+
+    private void maybeForceBuilderInitialization() {
+      if (com.google.protobuf.GeneratedMessageV3.alwaysUseFieldBuilders) {}
+    }
+
+    @java.lang.Override
+    public Builder clear() {
+      super.clear();
+      uri_ = "";
+
+      return this;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
+      return com.google.cloud.dialogflow.v2.GcsProto
+          .internal_static_google_cloud_dialogflow_v2_GcsDestination_descriptor;
+    }
+
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2.GcsDestination getDefaultInstanceForType() {
+      return com.google.cloud.dialogflow.v2.GcsDestination.getDefaultInstance();
+    }
+
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2.GcsDestination build() {
+      com.google.cloud.dialogflow.v2.GcsDestination result = buildPartial();
+      if (!result.isInitialized()) {
+        throw newUninitializedMessageException(result);
+      }
+      return result;
+    }
+
+    @java.lang.Override
+    public com.google.cloud.dialogflow.v2.GcsDestination buildPartial() {
+      com.google.cloud.dialogflow.v2.GcsDestination result =
+          new com.google.cloud.dialogflow.v2.GcsDestination(this);
+      result.uri_ = uri_;
+      onBuilt();
+      return result;
+    }
+
+    @java.lang.Override
+    public Builder clone() {
+      return super.clone();
+    }
+
+    @java.lang.Override
+    public Builder setField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.setField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder clearField(com.google.protobuf.Descriptors.FieldDescriptor field) {
+      return super.clearField(field);
+    }
+
+    @java.lang.Override
+    public Builder clearOneof(com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+      return super.clearOneof(oneof);
+    }
+
+    @java.lang.Override
+    public Builder setRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, int index, java.lang.Object value) {
+      return super.setRepeatedField(field, index, value);
+    }
+
+    @java.lang.Override
+    public Builder addRepeatedField(
+        com.google.protobuf.Descriptors.FieldDescriptor field, java.lang.Object value) {
+      return super.addRepeatedField(field, value);
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(com.google.protobuf.Message other) {
+      if (other instanceof com.google.cloud.dialogflow.v2.GcsDestination) {
+        return mergeFrom((com.google.cloud.dialogflow.v2.GcsDestination) other);
+      } else {
+        super.mergeFrom(other);
+        return this;
+      }
+    }
+
+    public Builder mergeFrom(com.google.cloud.dialogflow.v2.GcsDestination other) {
+      if (other == com.google.cloud.dialogflow.v2.GcsDestination.getDefaultInstance()) return this;
+      if (!other.getUri().isEmpty()) {
+        uri_ = other.uri_;
+        onChanged();
+      }
+      this.mergeUnknownFields(other.unknownFields);
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final boolean isInitialized() {
+      return true;
+    }
+
+    @java.lang.Override
+    public Builder mergeFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      com.google.cloud.dialogflow.v2.GcsDestination parsedMessage = null;
+      try {
+        parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        parsedMessage = (com.google.cloud.dialogflow.v2.GcsDestination) e.getUnfinishedMessage();
+        throw e.unwrapIOException();
+      } finally {
+        if (parsedMessage != null) {
+          mergeFrom(parsedMessage);
+        }
+      }
+      return this;
+    }
+
+    private java.lang.Object uri_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * The Google Cloud Storage URIs for the output. A URI is of the
+     * form:
+     *   gs://bucket/object-prefix-or-name
+     * Whether a prefix or name is used depends on the use case. The requesting
+     * user must have "write-permission" to the bucket.
+     * </pre>
+     *
+     * <code>string uri = 1;</code>
+     *
+     * @return The uri.
+     */
+    public java.lang.String getUri() {
+      java.lang.Object ref = uri_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        uri_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The Google Cloud Storage URIs for the output. A URI is of the
+     * form:
+     *   gs://bucket/object-prefix-or-name
+     * Whether a prefix or name is used depends on the use case. The requesting
+     * user must have "write-permission" to the bucket.
+     * </pre>
+     *
+     * <code>string uri = 1;</code>
+     *
+     * @return The bytes for uri.
+     */
+    public com.google.protobuf.ByteString getUriBytes() {
+      java.lang.Object ref = uri_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        uri_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The Google Cloud Storage URIs for the output. A URI is of the
+     * form:
+     *   gs://bucket/object-prefix-or-name
+     * Whether a prefix or name is used depends on the use case. The requesting
+     * user must have "write-permission" to the bucket.
+     * </pre>
+     *
+     * <code>string uri = 1;</code>
+     *
+     * @param value The uri to set.
+     * @return This builder for chaining.
+     */
+    public Builder setUri(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      uri_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The Google Cloud Storage URIs for the output. A URI is of the
+     * form:
+     *   gs://bucket/object-prefix-or-name
+     * Whether a prefix or name is used depends on the use case. The requesting
+     * user must have "write-permission" to the bucket.
+     * </pre>
+     *
+     * <code>string uri = 1;</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearUri() {
+
+      uri_ = getDefaultInstance().getUri();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The Google Cloud Storage URIs for the output. A URI is of the
+     * form:
+     *   gs://bucket/object-prefix-or-name
+     * Whether a prefix or name is used depends on the use case. The requesting
+     * user must have "write-permission" to the bucket.
+     * </pre>
+     *
+     * <code>string uri = 1;</code>
+     *
+     * @param value The bytes for uri to set.
+     * @return This builder for chaining.
+     */
+    public Builder setUriBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+
+      uri_ = value;
+      onChanged();
+      return this;
+    }
+
+    @java.lang.Override
+    public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.setUnknownFields(unknownFields);
+    }
+
+    @java.lang.Override
+    public final Builder mergeUnknownFields(
+        final com.google.protobuf.UnknownFieldSet unknownFields) {
+      return super.mergeUnknownFields(unknownFields);
+    }
+
+    // @@protoc_insertion_point(builder_scope:google.cloud.dialogflow.v2.GcsDestination)
+  }
+
+  // @@protoc_insertion_point(class_scope:google.cloud.dialogflow.v2.GcsDestination)
+  private static final com.google.cloud.dialogflow.v2.GcsDestination DEFAULT_INSTANCE;
+
+  static {
+    DEFAULT_INSTANCE = new com.google.cloud.dialogflow.v2.GcsDestination();
+  }
+
+  public static com.google.cloud.dialogflow.v2.GcsDestination getDefaultInstance() {
+    return DEFAULT_INSTANCE;
+  }
+
+  private static final com.google.protobuf.Parser<GcsDestination> PARSER =
+      new com.google.protobuf.AbstractParser<GcsDestination>() {
+        @java.lang.Override
+        public GcsDestination parsePartialFrom(
+            com.google.protobuf.CodedInputStream input,
+            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+            throws com.google.protobuf.InvalidProtocolBufferException {
+          return new GcsDestination(input, extensionRegistry);
+        }
+      };
+
+  public static com.google.protobuf.Parser<GcsDestination> parser() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.protobuf.Parser<GcsDestination> getParserForType() {
+    return PARSER;
+  }
+
+  @java.lang.Override
+  public com.google.cloud.dialogflow.v2.GcsDestination getDefaultInstanceForType() {
+    return DEFAULT_INSTANCE;
+  }
+}
diff --git a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/GcsDestinationOrBuilder.java b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/GcsDestinationOrBuilder.java
new file mode 100644
index 000000000..5278758cd
--- /dev/null
+++ b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/GcsDestinationOrBuilder.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2020 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.
+ */
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/cloud/dialogflow/v2/gcs.proto
+
+package com.google.cloud.dialogflow.v2;
+
+public interface GcsDestinationOrBuilder
+    extends
+    // @@protoc_insertion_point(interface_extends:google.cloud.dialogflow.v2.GcsDestination)
+    com.google.protobuf.MessageOrBuilder {
+
+  /**
+   *
+   *
+   * <pre>
+   * The Google Cloud Storage URIs for the output. A URI is of the
+   * form:
+   *   gs://bucket/object-prefix-or-name
+   * Whether a prefix or name is used depends on the use case. The requesting
+   * user must have "write-permission" to the bucket.
+   * </pre>
+   *
+   * <code>string uri = 1;</code>
+   *
+   * @return The uri.
+   */
+  java.lang.String getUri();
+  /**
+   *
+   *
+   * <pre>
+   * The Google Cloud Storage URIs for the output. A URI is of the
+   * form:
+   *   gs://bucket/object-prefix-or-name
+   * Whether a prefix or name is used depends on the use case. The requesting
+   * user must have "write-permission" to the bucket.
+   * </pre>
+   *
+   * <code>string uri = 1;</code>
+   *
+   * @return The bytes for uri.
+   */
+  com.google.protobuf.ByteString getUriBytes();
+}
diff --git a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/GcsProto.java b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/GcsProto.java
index b2d9467e4..4cf11bf04 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/GcsProto.java
+++ b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/GcsProto.java
@@ -27,6 +27,11 @@ public static void registerAllExtensions(com.google.protobuf.ExtensionRegistry r
     registerAllExtensions((com.google.protobuf.ExtensionRegistryLite) registry);
   }
 
+  static final com.google.protobuf.Descriptors.Descriptor
+      internal_static_google_cloud_dialogflow_v2_GcsDestination_descriptor;
+  static final com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_google_cloud_dialogflow_v2_GcsDestination_fieldAccessorTable;
+
   public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
     return descriptor;
   }
@@ -38,11 +43,12 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
       "\n$google/cloud/dialogflow/v2/gcs.proto\022\032"
           + "google.cloud.dialogflow.v2\032\037google/api/f"
           + "ield_behavior.proto\032\034google/api/annotati"
-          + "ons.protoB\227\001\n\036com.google.cloud.dialogflo"
-          + "w.v2B\010GcsProtoP\001ZDgoogle.golang.org/genp"
-          + "roto/googleapis/cloud/dialogflow/v2;dial"
-          + "ogflow\370\001\001\242\002\002DF\252\002\032Google.Cloud.Dialogflow"
-          + ".V2b\006proto3"
+          + "ons.proto\"\035\n\016GcsDestination\022\013\n\003uri\030\001 \001(\t"
+          + "B\227\001\n\036com.google.cloud.dialogflow.v2B\010Gcs"
+          + "ProtoP\001ZDgoogle.golang.org/genproto/goog"
+          + "leapis/cloud/dialogflow/v2;dialogflow\370\001\001"
+          + "\242\002\002DF\252\002\032Google.Cloud.Dialogflow.V2b\006prot"
+          + "o3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -51,6 +57,14 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               com.google.api.FieldBehaviorProto.getDescriptor(),
               com.google.api.AnnotationsProto.getDescriptor(),
             });
+    internal_static_google_cloud_dialogflow_v2_GcsDestination_descriptor =
+        getDescriptor().getMessageTypes().get(0);
+    internal_static_google_cloud_dialogflow_v2_GcsDestination_fieldAccessorTable =
+        new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+            internal_static_google_cloud_dialogflow_v2_GcsDestination_descriptor,
+            new java.lang.String[] {
+              "Uri",
+            });
     com.google.api.FieldBehaviorProto.getDescriptor();
     com.google.api.AnnotationsProto.getDescriptor();
   }
diff --git a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBaseProto.java b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBaseProto.java
index 45438ca5d..a41a62cea 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBaseProto.java
+++ b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/KnowledgeBaseProto.java
@@ -76,74 +76,75 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "gleapis.com/KnowledgeBase\0222projects/{pro"
           + "ject}/knowledgeBases/{knowledge_base}\022Gp"
           + "rojects/{project}/locations/{location}/k"
-          + "nowledgeBases/{knowledge_base}\"\203\001\n\031ListK"
+          + "nowledgeBases/{knowledge_base}\"\223\001\n\031ListK"
           + "nowledgeBasesRequest\022?\n\006parent\030\001 \001(\tB/\340A"
           + "\002\372A)\022\'dialogflow.googleapis.com/Knowledg"
           + "eBase\022\021\n\tpage_size\030\002 \001(\005\022\022\n\npage_token\030\003"
-          + " \001(\t\"y\n\032ListKnowledgeBasesResponse\022B\n\017kn"
-          + "owledge_bases\030\001 \003(\0132).google.cloud.dialo"
-          + "gflow.v2.KnowledgeBase\022\027\n\017next_page_toke"
-          + "n\030\002 \001(\t\"X\n\027GetKnowledgeBaseRequest\022=\n\004na"
-          + "me\030\001 \001(\tB/\340A\002\372A)\n\'dialogflow.googleapis."
-          + "com/KnowledgeBase\"\245\001\n\032CreateKnowledgeBas"
-          + "eRequest\022?\n\006parent\030\001 \001(\tB/\340A\002\372A)\022\'dialog"
-          + "flow.googleapis.com/KnowledgeBase\022F\n\016kno"
-          + "wledge_base\030\002 \001(\0132).google.cloud.dialogf"
-          + "low.v2.KnowledgeBaseB\003\340A\002\"o\n\032DeleteKnowl"
-          + "edgeBaseRequest\022=\n\004name\030\001 \001(\tB/\340A\002\372A)\n\'d"
-          + "ialogflow.googleapis.com/KnowledgeBase\022\022"
-          + "\n\005force\030\002 \001(\010B\003\340A\001\"\232\001\n\032UpdateKnowledgeBa"
-          + "seRequest\022F\n\016knowledge_base\030\001 \001(\0132).goog"
+          + " \001(\t\022\016\n\006filter\030\004 \001(\t\"y\n\032ListKnowledgeBas"
+          + "esResponse\022B\n\017knowledge_bases\030\001 \003(\0132).go"
+          + "ogle.cloud.dialogflow.v2.KnowledgeBase\022\027"
+          + "\n\017next_page_token\030\002 \001(\t\"X\n\027GetKnowledgeB"
+          + "aseRequest\022=\n\004name\030\001 \001(\tB/\340A\002\372A)\n\'dialog"
+          + "flow.googleapis.com/KnowledgeBase\"\245\001\n\032Cr"
+          + "eateKnowledgeBaseRequest\022?\n\006parent\030\001 \001(\t"
+          + "B/\340A\002\372A)\022\'dialogflow.googleapis.com/Know"
+          + "ledgeBase\022F\n\016knowledge_base\030\002 \001(\0132).goog"
           + "le.cloud.dialogflow.v2.KnowledgeBaseB\003\340A"
-          + "\002\0224\n\013update_mask\030\002 \001(\0132\032.google.protobuf"
-          + ".FieldMaskB\003\340A\0012\264\r\n\016KnowledgeBases\022\244\002\n\022L"
-          + "istKnowledgeBases\0225.google.cloud.dialogf"
-          + "low.v2.ListKnowledgeBasesRequest\0326.googl"
-          + "e.cloud.dialogflow.v2.ListKnowledgeBases"
-          + "Response\"\236\001\202\323\344\223\002\216\001\022&/v2/{parent=projects"
-          + "/*}/knowledgeBasesZ4\0222/v2/{parent=projec"
-          + "ts/*/locations/*}/knowledgeBasesZ.\022,/v2/"
-          + "{parent=projects/*/agent}/knowledgeBases"
-          + "\332A\006parent\022\221\002\n\020GetKnowledgeBase\0223.google."
-          + "cloud.dialogflow.v2.GetKnowledgeBaseRequ"
-          + "est\032).google.cloud.dialogflow.v2.Knowled"
-          + "geBase\"\234\001\202\323\344\223\002\216\001\022&/v2/{name=projects/*/k"
-          + "nowledgeBases/*}Z4\0222/v2/{name=projects/*"
-          + "/locations/*/knowledgeBases/*}Z.\022,/v2/{n"
-          + "ame=projects/*/agent/knowledgeBases/*}\332A"
-          + "\004name\022\330\002\n\023CreateKnowledgeBase\0226.google.c"
-          + "loud.dialogflow.v2.CreateKnowledgeBaseRe"
-          + "quest\032).google.cloud.dialogflow.v2.Knowl"
-          + "edgeBase\"\335\001\202\323\344\223\002\276\001\"&/v2/{parent=projects"
-          + "/*}/knowledgeBases:\016knowledge_baseZD\"2/v"
+          + "\002\"o\n\032DeleteKnowledgeBaseRequest\022=\n\004name\030"
+          + "\001 \001(\tB/\340A\002\372A)\n\'dialogflow.googleapis.com"
+          + "/KnowledgeBase\022\022\n\005force\030\002 \001(\010B\003\340A\001\"\232\001\n\032U"
+          + "pdateKnowledgeBaseRequest\022F\n\016knowledge_b"
+          + "ase\030\001 \001(\0132).google.cloud.dialogflow.v2.K"
+          + "nowledgeBaseB\003\340A\002\0224\n\013update_mask\030\002 \001(\0132\032"
+          + ".google.protobuf.FieldMaskB\003\340A\0012\264\r\n\016Know"
+          + "ledgeBases\022\244\002\n\022ListKnowledgeBases\0225.goog"
+          + "le.cloud.dialogflow.v2.ListKnowledgeBase"
+          + "sRequest\0326.google.cloud.dialogflow.v2.Li"
+          + "stKnowledgeBasesResponse\"\236\001\202\323\344\223\002\216\001\022&/v2/"
+          + "{parent=projects/*}/knowledgeBasesZ4\0222/v"
           + "2/{parent=projects/*/locations/*}/knowle"
-          + "dgeBases:\016knowledge_baseZ>\",/v2/{parent="
-          + "projects/*/agent}/knowledgeBases:\016knowle"
-          + "dge_base\332A\025parent,knowledge_base\022\204\002\n\023Del"
-          + "eteKnowledgeBase\0226.google.cloud.dialogfl"
-          + "ow.v2.DeleteKnowledgeBaseRequest\032\026.googl"
-          + "e.protobuf.Empty\"\234\001\202\323\344\223\002\216\001*&/v2/{name=pr"
-          + "ojects/*/knowledgeBases/*}Z4*2/v2/{name="
-          + "projects/*/locations/*/knowledgeBases/*}"
-          + "Z.*,/v2/{name=projects/*/agent/knowledge"
-          + "Bases/*}\332A\004name\022\212\003\n\023UpdateKnowledgeBase\022"
-          + "6.google.cloud.dialogflow.v2.UpdateKnowl"
-          + "edgeBaseRequest\032).google.cloud.dialogflo"
-          + "w.v2.KnowledgeBase\"\217\002\202\323\344\223\002\353\00125/v2/{knowl"
-          + "edge_base.name=projects/*/knowledgeBases"
-          + "/*}:\016knowledge_baseZS2A/v2/{knowledge_ba"
-          + "se.name=projects/*/locations/*/knowledge"
-          + "Bases/*}:\016knowledge_baseZM2;/v2/{knowled"
-          + "ge_base.name=projects/*/agent/knowledgeB"
-          + "ases/*}:\016knowledge_base\332A\032knowledge_base"
-          + ",update_mask\032x\312A\031dialogflow.googleapis.c"
-          + "om\322AYhttps://www.googleapis.com/auth/clo"
-          + "ud-platform,https://www.googleapis.com/a"
-          + "uth/dialogflowB\241\001\n\036com.google.cloud.dial"
-          + "ogflow.v2B\022KnowledgeBaseProtoP\001ZDgoogle."
-          + "golang.org/genproto/googleapis/cloud/dia"
-          + "logflow/v2;dialogflow\370\001\001\242\002\002DF\252\002\032Google.C"
-          + "loud.Dialogflow.V2b\006proto3"
+          + "dgeBasesZ.\022,/v2/{parent=projects/*/agent"
+          + "}/knowledgeBases\332A\006parent\022\221\002\n\020GetKnowled"
+          + "geBase\0223.google.cloud.dialogflow.v2.GetK"
+          + "nowledgeBaseRequest\032).google.cloud.dialo"
+          + "gflow.v2.KnowledgeBase\"\234\001\202\323\344\223\002\216\001\022&/v2/{n"
+          + "ame=projects/*/knowledgeBases/*}Z4\0222/v2/"
+          + "{name=projects/*/locations/*/knowledgeBa"
+          + "ses/*}Z.\022,/v2/{name=projects/*/agent/kno"
+          + "wledgeBases/*}\332A\004name\022\330\002\n\023CreateKnowledg"
+          + "eBase\0226.google.cloud.dialogflow.v2.Creat"
+          + "eKnowledgeBaseRequest\032).google.cloud.dia"
+          + "logflow.v2.KnowledgeBase\"\335\001\202\323\344\223\002\276\001\"&/v2/"
+          + "{parent=projects/*}/knowledgeBases:\016know"
+          + "ledge_baseZD\"2/v2/{parent=projects/*/loc"
+          + "ations/*}/knowledgeBases:\016knowledge_base"
+          + "Z>\",/v2/{parent=projects/*/agent}/knowle"
+          + "dgeBases:\016knowledge_base\332A\025parent,knowle"
+          + "dge_base\022\204\002\n\023DeleteKnowledgeBase\0226.googl"
+          + "e.cloud.dialogflow.v2.DeleteKnowledgeBas"
+          + "eRequest\032\026.google.protobuf.Empty\"\234\001\202\323\344\223\002"
+          + "\216\001*&/v2/{name=projects/*/knowledgeBases/"
+          + "*}Z4*2/v2/{name=projects/*/locations/*/k"
+          + "nowledgeBases/*}Z.*,/v2/{name=projects/*"
+          + "/agent/knowledgeBases/*}\332A\004name\022\212\003\n\023Upda"
+          + "teKnowledgeBase\0226.google.cloud.dialogflo"
+          + "w.v2.UpdateKnowledgeBaseRequest\032).google"
+          + ".cloud.dialogflow.v2.KnowledgeBase\"\217\002\202\323\344"
+          + "\223\002\353\00125/v2/{knowledge_base.name=projects/"
+          + "*/knowledgeBases/*}:\016knowledge_baseZS2A/"
+          + "v2/{knowledge_base.name=projects/*/locat"
+          + "ions/*/knowledgeBases/*}:\016knowledge_base"
+          + "ZM2;/v2/{knowledge_base.name=projects/*/"
+          + "agent/knowledgeBases/*}:\016knowledge_base\332"
+          + "A\032knowledge_base,update_mask\032x\312A\031dialogf"
+          + "low.googleapis.com\322AYhttps://www.googlea"
+          + "pis.com/auth/cloud-platform,https://www."
+          + "googleapis.com/auth/dialogflowB\241\001\n\036com.g"
+          + "oogle.cloud.dialogflow.v2B\022KnowledgeBase"
+          + "ProtoP\001ZDgoogle.golang.org/genproto/goog"
+          + "leapis/cloud/dialogflow/v2;dialogflow\370\001\001"
+          + "\242\002\002DF\252\002\032Google.Cloud.Dialogflow.V2b\006prot"
+          + "o3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -170,7 +171,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
         new com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
             internal_static_google_cloud_dialogflow_v2_ListKnowledgeBasesRequest_descriptor,
             new java.lang.String[] {
-              "Parent", "PageSize", "PageToken",
+              "Parent", "PageSize", "PageToken", "Filter",
             });
     internal_static_google_cloud_dialogflow_v2_ListKnowledgeBasesResponse_descriptor =
         getDescriptor().getMessageTypes().get(2);
diff --git a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ListDocumentsRequest.java b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ListDocumentsRequest.java
index ced31e87c..608311e8c 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ListDocumentsRequest.java
+++ b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ListDocumentsRequest.java
@@ -40,6 +40,7 @@ private ListDocumentsRequest(com.google.protobuf.GeneratedMessageV3.Builder<?> b
   private ListDocumentsRequest() {
     parent_ = "";
     pageToken_ = "";
+    filter_ = "";
   }
 
   @java.lang.Override
@@ -90,6 +91,13 @@ private ListDocumentsRequest(
               pageToken_ = s;
               break;
             }
+          case 34:
+            {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              filter_ = s;
+              break;
+            }
           default:
             {
               if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
@@ -249,6 +257,83 @@ public com.google.protobuf.ByteString getPageTokenBytes() {
     }
   }
 
+  public static final int FILTER_FIELD_NUMBER = 4;
+  private volatile java.lang.Object filter_;
+  /**
+   *
+   *
+   * <pre>
+   * The filter expression used to filter documents returned by the list method.
+   * The expression has the following syntax:
+   *   &lt;field&gt; &lt;operator&gt; &lt;value&gt; [AND &lt;field&gt; &lt;operator&gt; &lt;value&gt;] ...
+   * The following fields and operators are supported:
+   * * knowledge_types with has(:) operator
+   * * display_name with has(:) operator
+   * * state with equals(=) operator
+   * Examples:
+   * * "knowledge_types:FAQ" matches documents with FAQ knowledge type.
+   * * "display_name:customer" matches documents whose display name contains
+   *   "customer".
+   * * "state=ACTIVE" matches documents with ACTIVE state.
+   * * "knowledge_types:FAQ AND state=ACTIVE" matches all active FAQ documents.
+   * For more information about filtering, see
+   * [API Filtering](https://aip.dev/160).
+   * </pre>
+   *
+   * <code>string filter = 4;</code>
+   *
+   * @return The filter.
+   */
+  @java.lang.Override
+  public java.lang.String getFilter() {
+    java.lang.Object ref = filter_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      filter_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The filter expression used to filter documents returned by the list method.
+   * The expression has the following syntax:
+   *   &lt;field&gt; &lt;operator&gt; &lt;value&gt; [AND &lt;field&gt; &lt;operator&gt; &lt;value&gt;] ...
+   * The following fields and operators are supported:
+   * * knowledge_types with has(:) operator
+   * * display_name with has(:) operator
+   * * state with equals(=) operator
+   * Examples:
+   * * "knowledge_types:FAQ" matches documents with FAQ knowledge type.
+   * * "display_name:customer" matches documents whose display name contains
+   *   "customer".
+   * * "state=ACTIVE" matches documents with ACTIVE state.
+   * * "knowledge_types:FAQ AND state=ACTIVE" matches all active FAQ documents.
+   * For more information about filtering, see
+   * [API Filtering](https://aip.dev/160).
+   * </pre>
+   *
+   * <code>string filter = 4;</code>
+   *
+   * @return The bytes for filter.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getFilterBytes() {
+    java.lang.Object ref = filter_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      filter_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
   private byte memoizedIsInitialized = -1;
 
   @java.lang.Override
@@ -272,6 +357,9 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(pageToken_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, pageToken_);
     }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(filter_)) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 4, filter_);
+    }
     unknownFields.writeTo(output);
   }
 
@@ -290,6 +378,9 @@ public int getSerializedSize() {
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(pageToken_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, pageToken_);
     }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(filter_)) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(4, filter_);
+    }
     size += unknownFields.getSerializedSize();
     memoizedSize = size;
     return size;
@@ -309,6 +400,7 @@ public boolean equals(final java.lang.Object obj) {
     if (!getParent().equals(other.getParent())) return false;
     if (getPageSize() != other.getPageSize()) return false;
     if (!getPageToken().equals(other.getPageToken())) return false;
+    if (!getFilter().equals(other.getFilter())) return false;
     if (!unknownFields.equals(other.unknownFields)) return false;
     return true;
   }
@@ -326,6 +418,8 @@ public int hashCode() {
     hash = (53 * hash) + getPageSize();
     hash = (37 * hash) + PAGE_TOKEN_FIELD_NUMBER;
     hash = (53 * hash) + getPageToken().hashCode();
+    hash = (37 * hash) + FILTER_FIELD_NUMBER;
+    hash = (53 * hash) + getFilter().hashCode();
     hash = (29 * hash) + unknownFields.hashCode();
     memoizedHashCode = hash;
     return hash;
@@ -477,6 +571,8 @@ public Builder clear() {
 
       pageToken_ = "";
 
+      filter_ = "";
+
       return this;
     }
 
@@ -507,6 +603,7 @@ public com.google.cloud.dialogflow.v2.ListDocumentsRequest buildPartial() {
       result.parent_ = parent_;
       result.pageSize_ = pageSize_;
       result.pageToken_ = pageToken_;
+      result.filter_ = filter_;
       onBuilt();
       return result;
     }
@@ -568,6 +665,10 @@ public Builder mergeFrom(com.google.cloud.dialogflow.v2.ListDocumentsRequest oth
         pageToken_ = other.pageToken_;
         onChanged();
       }
+      if (!other.getFilter().isEmpty()) {
+        filter_ = other.filter_;
+        onChanged();
+      }
       this.mergeUnknownFields(other.unknownFields);
       onChanged();
       return this;
@@ -885,6 +986,182 @@ public Builder setPageTokenBytes(com.google.protobuf.ByteString value) {
       return this;
     }
 
+    private java.lang.Object filter_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * The filter expression used to filter documents returned by the list method.
+     * The expression has the following syntax:
+     *   &lt;field&gt; &lt;operator&gt; &lt;value&gt; [AND &lt;field&gt; &lt;operator&gt; &lt;value&gt;] ...
+     * The following fields and operators are supported:
+     * * knowledge_types with has(:) operator
+     * * display_name with has(:) operator
+     * * state with equals(=) operator
+     * Examples:
+     * * "knowledge_types:FAQ" matches documents with FAQ knowledge type.
+     * * "display_name:customer" matches documents whose display name contains
+     *   "customer".
+     * * "state=ACTIVE" matches documents with ACTIVE state.
+     * * "knowledge_types:FAQ AND state=ACTIVE" matches all active FAQ documents.
+     * For more information about filtering, see
+     * [API Filtering](https://aip.dev/160).
+     * </pre>
+     *
+     * <code>string filter = 4;</code>
+     *
+     * @return The filter.
+     */
+    public java.lang.String getFilter() {
+      java.lang.Object ref = filter_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        filter_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The filter expression used to filter documents returned by the list method.
+     * The expression has the following syntax:
+     *   &lt;field&gt; &lt;operator&gt; &lt;value&gt; [AND &lt;field&gt; &lt;operator&gt; &lt;value&gt;] ...
+     * The following fields and operators are supported:
+     * * knowledge_types with has(:) operator
+     * * display_name with has(:) operator
+     * * state with equals(=) operator
+     * Examples:
+     * * "knowledge_types:FAQ" matches documents with FAQ knowledge type.
+     * * "display_name:customer" matches documents whose display name contains
+     *   "customer".
+     * * "state=ACTIVE" matches documents with ACTIVE state.
+     * * "knowledge_types:FAQ AND state=ACTIVE" matches all active FAQ documents.
+     * For more information about filtering, see
+     * [API Filtering](https://aip.dev/160).
+     * </pre>
+     *
+     * <code>string filter = 4;</code>
+     *
+     * @return The bytes for filter.
+     */
+    public com.google.protobuf.ByteString getFilterBytes() {
+      java.lang.Object ref = filter_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        filter_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The filter expression used to filter documents returned by the list method.
+     * The expression has the following syntax:
+     *   &lt;field&gt; &lt;operator&gt; &lt;value&gt; [AND &lt;field&gt; &lt;operator&gt; &lt;value&gt;] ...
+     * The following fields and operators are supported:
+     * * knowledge_types with has(:) operator
+     * * display_name with has(:) operator
+     * * state with equals(=) operator
+     * Examples:
+     * * "knowledge_types:FAQ" matches documents with FAQ knowledge type.
+     * * "display_name:customer" matches documents whose display name contains
+     *   "customer".
+     * * "state=ACTIVE" matches documents with ACTIVE state.
+     * * "knowledge_types:FAQ AND state=ACTIVE" matches all active FAQ documents.
+     * For more information about filtering, see
+     * [API Filtering](https://aip.dev/160).
+     * </pre>
+     *
+     * <code>string filter = 4;</code>
+     *
+     * @param value The filter to set.
+     * @return This builder for chaining.
+     */
+    public Builder setFilter(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      filter_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The filter expression used to filter documents returned by the list method.
+     * The expression has the following syntax:
+     *   &lt;field&gt; &lt;operator&gt; &lt;value&gt; [AND &lt;field&gt; &lt;operator&gt; &lt;value&gt;] ...
+     * The following fields and operators are supported:
+     * * knowledge_types with has(:) operator
+     * * display_name with has(:) operator
+     * * state with equals(=) operator
+     * Examples:
+     * * "knowledge_types:FAQ" matches documents with FAQ knowledge type.
+     * * "display_name:customer" matches documents whose display name contains
+     *   "customer".
+     * * "state=ACTIVE" matches documents with ACTIVE state.
+     * * "knowledge_types:FAQ AND state=ACTIVE" matches all active FAQ documents.
+     * For more information about filtering, see
+     * [API Filtering](https://aip.dev/160).
+     * </pre>
+     *
+     * <code>string filter = 4;</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearFilter() {
+
+      filter_ = getDefaultInstance().getFilter();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The filter expression used to filter documents returned by the list method.
+     * The expression has the following syntax:
+     *   &lt;field&gt; &lt;operator&gt; &lt;value&gt; [AND &lt;field&gt; &lt;operator&gt; &lt;value&gt;] ...
+     * The following fields and operators are supported:
+     * * knowledge_types with has(:) operator
+     * * display_name with has(:) operator
+     * * state with equals(=) operator
+     * Examples:
+     * * "knowledge_types:FAQ" matches documents with FAQ knowledge type.
+     * * "display_name:customer" matches documents whose display name contains
+     *   "customer".
+     * * "state=ACTIVE" matches documents with ACTIVE state.
+     * * "knowledge_types:FAQ AND state=ACTIVE" matches all active FAQ documents.
+     * For more information about filtering, see
+     * [API Filtering](https://aip.dev/160).
+     * </pre>
+     *
+     * <code>string filter = 4;</code>
+     *
+     * @param value The bytes for filter to set.
+     * @return This builder for chaining.
+     */
+    public Builder setFilterBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+
+      filter_ = value;
+      onChanged();
+      return this;
+    }
+
     @java.lang.Override
     public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
       return super.setUnknownFields(unknownFields);
diff --git a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ListDocumentsRequestOrBuilder.java b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ListDocumentsRequestOrBuilder.java
index 0a6d99c48..27ebbdb74 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ListDocumentsRequestOrBuilder.java
+++ b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ListDocumentsRequestOrBuilder.java
@@ -94,4 +94,57 @@ public interface ListDocumentsRequestOrBuilder
    * @return The bytes for pageToken.
    */
   com.google.protobuf.ByteString getPageTokenBytes();
+
+  /**
+   *
+   *
+   * <pre>
+   * The filter expression used to filter documents returned by the list method.
+   * The expression has the following syntax:
+   *   &lt;field&gt; &lt;operator&gt; &lt;value&gt; [AND &lt;field&gt; &lt;operator&gt; &lt;value&gt;] ...
+   * The following fields and operators are supported:
+   * * knowledge_types with has(:) operator
+   * * display_name with has(:) operator
+   * * state with equals(=) operator
+   * Examples:
+   * * "knowledge_types:FAQ" matches documents with FAQ knowledge type.
+   * * "display_name:customer" matches documents whose display name contains
+   *   "customer".
+   * * "state=ACTIVE" matches documents with ACTIVE state.
+   * * "knowledge_types:FAQ AND state=ACTIVE" matches all active FAQ documents.
+   * For more information about filtering, see
+   * [API Filtering](https://aip.dev/160).
+   * </pre>
+   *
+   * <code>string filter = 4;</code>
+   *
+   * @return The filter.
+   */
+  java.lang.String getFilter();
+  /**
+   *
+   *
+   * <pre>
+   * The filter expression used to filter documents returned by the list method.
+   * The expression has the following syntax:
+   *   &lt;field&gt; &lt;operator&gt; &lt;value&gt; [AND &lt;field&gt; &lt;operator&gt; &lt;value&gt;] ...
+   * The following fields and operators are supported:
+   * * knowledge_types with has(:) operator
+   * * display_name with has(:) operator
+   * * state with equals(=) operator
+   * Examples:
+   * * "knowledge_types:FAQ" matches documents with FAQ knowledge type.
+   * * "display_name:customer" matches documents whose display name contains
+   *   "customer".
+   * * "state=ACTIVE" matches documents with ACTIVE state.
+   * * "knowledge_types:FAQ AND state=ACTIVE" matches all active FAQ documents.
+   * For more information about filtering, see
+   * [API Filtering](https://aip.dev/160).
+   * </pre>
+   *
+   * <code>string filter = 4;</code>
+   *
+   * @return The bytes for filter.
+   */
+  com.google.protobuf.ByteString getFilterBytes();
 }
diff --git a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ListKnowledgeBasesRequest.java b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ListKnowledgeBasesRequest.java
index 7fd929c31..ab41bf00d 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ListKnowledgeBasesRequest.java
+++ b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ListKnowledgeBasesRequest.java
@@ -40,6 +40,7 @@ private ListKnowledgeBasesRequest(com.google.protobuf.GeneratedMessageV3.Builder
   private ListKnowledgeBasesRequest() {
     parent_ = "";
     pageToken_ = "";
+    filter_ = "";
   }
 
   @java.lang.Override
@@ -90,6 +91,13 @@ private ListKnowledgeBasesRequest(
               pageToken_ = s;
               break;
             }
+          case 34:
+            {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              filter_ = s;
+              break;
+            }
           default:
             {
               if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
@@ -247,6 +255,91 @@ public com.google.protobuf.ByteString getPageTokenBytes() {
     }
   }
 
+  public static final int FILTER_FIELD_NUMBER = 4;
+  private volatile java.lang.Object filter_;
+  /**
+   *
+   *
+   * <pre>
+   * The filter expression used to filter knowledge bases returned by the list
+   * method. The expression has the following syntax:
+   *   &lt;field&gt; &lt;operator&gt; &lt;value&gt; [AND &lt;field&gt; &lt;operator&gt; &lt;value&gt;] ...
+   * The following fields and operators are supported:
+   * * display_name with has(:) operator
+   * * language_code with equals(=) operator
+   * Examples:
+   * * 'language_code=en-us' matches knowledge bases with en-us language code.
+   * * 'display_name:articles' matches knowledge bases whose display name
+   *   contains "articles".
+   * * 'display_name:"Best Articles"' matches knowledge bases whose display
+   *   name contains "Best Articles".
+   * * 'language_code=en-gb AND display_name=articles' matches all knowledge
+   *   bases whose display name contains "articles" and whose language code is
+   *   "en-gb".
+   * Note: An empty filter string (i.e. "") is a no-op and will result in no
+   * filtering.
+   * For more information about filtering, see
+   * [API Filtering](https://aip.dev/160).
+   * </pre>
+   *
+   * <code>string filter = 4;</code>
+   *
+   * @return The filter.
+   */
+  @java.lang.Override
+  public java.lang.String getFilter() {
+    java.lang.Object ref = filter_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      filter_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The filter expression used to filter knowledge bases returned by the list
+   * method. The expression has the following syntax:
+   *   &lt;field&gt; &lt;operator&gt; &lt;value&gt; [AND &lt;field&gt; &lt;operator&gt; &lt;value&gt;] ...
+   * The following fields and operators are supported:
+   * * display_name with has(:) operator
+   * * language_code with equals(=) operator
+   * Examples:
+   * * 'language_code=en-us' matches knowledge bases with en-us language code.
+   * * 'display_name:articles' matches knowledge bases whose display name
+   *   contains "articles".
+   * * 'display_name:"Best Articles"' matches knowledge bases whose display
+   *   name contains "Best Articles".
+   * * 'language_code=en-gb AND display_name=articles' matches all knowledge
+   *   bases whose display name contains "articles" and whose language code is
+   *   "en-gb".
+   * Note: An empty filter string (i.e. "") is a no-op and will result in no
+   * filtering.
+   * For more information about filtering, see
+   * [API Filtering](https://aip.dev/160).
+   * </pre>
+   *
+   * <code>string filter = 4;</code>
+   *
+   * @return The bytes for filter.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getFilterBytes() {
+    java.lang.Object ref = filter_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      filter_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
   private byte memoizedIsInitialized = -1;
 
   @java.lang.Override
@@ -270,6 +363,9 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(pageToken_)) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, pageToken_);
     }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(filter_)) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 4, filter_);
+    }
     unknownFields.writeTo(output);
   }
 
@@ -288,6 +384,9 @@ public int getSerializedSize() {
     if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(pageToken_)) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, pageToken_);
     }
+    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(filter_)) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(4, filter_);
+    }
     size += unknownFields.getSerializedSize();
     memoizedSize = size;
     return size;
@@ -307,6 +406,7 @@ public boolean equals(final java.lang.Object obj) {
     if (!getParent().equals(other.getParent())) return false;
     if (getPageSize() != other.getPageSize()) return false;
     if (!getPageToken().equals(other.getPageToken())) return false;
+    if (!getFilter().equals(other.getFilter())) return false;
     if (!unknownFields.equals(other.unknownFields)) return false;
     return true;
   }
@@ -324,6 +424,8 @@ public int hashCode() {
     hash = (53 * hash) + getPageSize();
     hash = (37 * hash) + PAGE_TOKEN_FIELD_NUMBER;
     hash = (53 * hash) + getPageToken().hashCode();
+    hash = (37 * hash) + FILTER_FIELD_NUMBER;
+    hash = (53 * hash) + getFilter().hashCode();
     hash = (29 * hash) + unknownFields.hashCode();
     memoizedHashCode = hash;
     return hash;
@@ -476,6 +578,8 @@ public Builder clear() {
 
       pageToken_ = "";
 
+      filter_ = "";
+
       return this;
     }
 
@@ -506,6 +610,7 @@ public com.google.cloud.dialogflow.v2.ListKnowledgeBasesRequest buildPartial() {
       result.parent_ = parent_;
       result.pageSize_ = pageSize_;
       result.pageToken_ = pageToken_;
+      result.filter_ = filter_;
       onBuilt();
       return result;
     }
@@ -567,6 +672,10 @@ public Builder mergeFrom(com.google.cloud.dialogflow.v2.ListKnowledgeBasesReques
         pageToken_ = other.pageToken_;
         onChanged();
       }
+      if (!other.getFilter().isEmpty()) {
+        filter_ = other.filter_;
+        onChanged();
+      }
       this.mergeUnknownFields(other.unknownFields);
       onChanged();
       return this;
@@ -879,6 +988,202 @@ public Builder setPageTokenBytes(com.google.protobuf.ByteString value) {
       return this;
     }
 
+    private java.lang.Object filter_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * The filter expression used to filter knowledge bases returned by the list
+     * method. The expression has the following syntax:
+     *   &lt;field&gt; &lt;operator&gt; &lt;value&gt; [AND &lt;field&gt; &lt;operator&gt; &lt;value&gt;] ...
+     * The following fields and operators are supported:
+     * * display_name with has(:) operator
+     * * language_code with equals(=) operator
+     * Examples:
+     * * 'language_code=en-us' matches knowledge bases with en-us language code.
+     * * 'display_name:articles' matches knowledge bases whose display name
+     *   contains "articles".
+     * * 'display_name:"Best Articles"' matches knowledge bases whose display
+     *   name contains "Best Articles".
+     * * 'language_code=en-gb AND display_name=articles' matches all knowledge
+     *   bases whose display name contains "articles" and whose language code is
+     *   "en-gb".
+     * Note: An empty filter string (i.e. "") is a no-op and will result in no
+     * filtering.
+     * For more information about filtering, see
+     * [API Filtering](https://aip.dev/160).
+     * </pre>
+     *
+     * <code>string filter = 4;</code>
+     *
+     * @return The filter.
+     */
+    public java.lang.String getFilter() {
+      java.lang.Object ref = filter_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        filter_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The filter expression used to filter knowledge bases returned by the list
+     * method. The expression has the following syntax:
+     *   &lt;field&gt; &lt;operator&gt; &lt;value&gt; [AND &lt;field&gt; &lt;operator&gt; &lt;value&gt;] ...
+     * The following fields and operators are supported:
+     * * display_name with has(:) operator
+     * * language_code with equals(=) operator
+     * Examples:
+     * * 'language_code=en-us' matches knowledge bases with en-us language code.
+     * * 'display_name:articles' matches knowledge bases whose display name
+     *   contains "articles".
+     * * 'display_name:"Best Articles"' matches knowledge bases whose display
+     *   name contains "Best Articles".
+     * * 'language_code=en-gb AND display_name=articles' matches all knowledge
+     *   bases whose display name contains "articles" and whose language code is
+     *   "en-gb".
+     * Note: An empty filter string (i.e. "") is a no-op and will result in no
+     * filtering.
+     * For more information about filtering, see
+     * [API Filtering](https://aip.dev/160).
+     * </pre>
+     *
+     * <code>string filter = 4;</code>
+     *
+     * @return The bytes for filter.
+     */
+    public com.google.protobuf.ByteString getFilterBytes() {
+      java.lang.Object ref = filter_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        filter_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The filter expression used to filter knowledge bases returned by the list
+     * method. The expression has the following syntax:
+     *   &lt;field&gt; &lt;operator&gt; &lt;value&gt; [AND &lt;field&gt; &lt;operator&gt; &lt;value&gt;] ...
+     * The following fields and operators are supported:
+     * * display_name with has(:) operator
+     * * language_code with equals(=) operator
+     * Examples:
+     * * 'language_code=en-us' matches knowledge bases with en-us language code.
+     * * 'display_name:articles' matches knowledge bases whose display name
+     *   contains "articles".
+     * * 'display_name:"Best Articles"' matches knowledge bases whose display
+     *   name contains "Best Articles".
+     * * 'language_code=en-gb AND display_name=articles' matches all knowledge
+     *   bases whose display name contains "articles" and whose language code is
+     *   "en-gb".
+     * Note: An empty filter string (i.e. "") is a no-op and will result in no
+     * filtering.
+     * For more information about filtering, see
+     * [API Filtering](https://aip.dev/160).
+     * </pre>
+     *
+     * <code>string filter = 4;</code>
+     *
+     * @param value The filter to set.
+     * @return This builder for chaining.
+     */
+    public Builder setFilter(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      filter_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The filter expression used to filter knowledge bases returned by the list
+     * method. The expression has the following syntax:
+     *   &lt;field&gt; &lt;operator&gt; &lt;value&gt; [AND &lt;field&gt; &lt;operator&gt; &lt;value&gt;] ...
+     * The following fields and operators are supported:
+     * * display_name with has(:) operator
+     * * language_code with equals(=) operator
+     * Examples:
+     * * 'language_code=en-us' matches knowledge bases with en-us language code.
+     * * 'display_name:articles' matches knowledge bases whose display name
+     *   contains "articles".
+     * * 'display_name:"Best Articles"' matches knowledge bases whose display
+     *   name contains "Best Articles".
+     * * 'language_code=en-gb AND display_name=articles' matches all knowledge
+     *   bases whose display name contains "articles" and whose language code is
+     *   "en-gb".
+     * Note: An empty filter string (i.e. "") is a no-op and will result in no
+     * filtering.
+     * For more information about filtering, see
+     * [API Filtering](https://aip.dev/160).
+     * </pre>
+     *
+     * <code>string filter = 4;</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearFilter() {
+
+      filter_ = getDefaultInstance().getFilter();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The filter expression used to filter knowledge bases returned by the list
+     * method. The expression has the following syntax:
+     *   &lt;field&gt; &lt;operator&gt; &lt;value&gt; [AND &lt;field&gt; &lt;operator&gt; &lt;value&gt;] ...
+     * The following fields and operators are supported:
+     * * display_name with has(:) operator
+     * * language_code with equals(=) operator
+     * Examples:
+     * * 'language_code=en-us' matches knowledge bases with en-us language code.
+     * * 'display_name:articles' matches knowledge bases whose display name
+     *   contains "articles".
+     * * 'display_name:"Best Articles"' matches knowledge bases whose display
+     *   name contains "Best Articles".
+     * * 'language_code=en-gb AND display_name=articles' matches all knowledge
+     *   bases whose display name contains "articles" and whose language code is
+     *   "en-gb".
+     * Note: An empty filter string (i.e. "") is a no-op and will result in no
+     * filtering.
+     * For more information about filtering, see
+     * [API Filtering](https://aip.dev/160).
+     * </pre>
+     *
+     * <code>string filter = 4;</code>
+     *
+     * @param value The bytes for filter to set.
+     * @return This builder for chaining.
+     */
+    public Builder setFilterBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+
+      filter_ = value;
+      onChanged();
+      return this;
+    }
+
     @java.lang.Override
     public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
       return super.setUnknownFields(unknownFields);
diff --git a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ListKnowledgeBasesRequestOrBuilder.java b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ListKnowledgeBasesRequestOrBuilder.java
index 4b523de19..2055704f8 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ListKnowledgeBasesRequestOrBuilder.java
+++ b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ListKnowledgeBasesRequestOrBuilder.java
@@ -92,4 +92,65 @@ public interface ListKnowledgeBasesRequestOrBuilder
    * @return The bytes for pageToken.
    */
   com.google.protobuf.ByteString getPageTokenBytes();
+
+  /**
+   *
+   *
+   * <pre>
+   * The filter expression used to filter knowledge bases returned by the list
+   * method. The expression has the following syntax:
+   *   &lt;field&gt; &lt;operator&gt; &lt;value&gt; [AND &lt;field&gt; &lt;operator&gt; &lt;value&gt;] ...
+   * The following fields and operators are supported:
+   * * display_name with has(:) operator
+   * * language_code with equals(=) operator
+   * Examples:
+   * * 'language_code=en-us' matches knowledge bases with en-us language code.
+   * * 'display_name:articles' matches knowledge bases whose display name
+   *   contains "articles".
+   * * 'display_name:"Best Articles"' matches knowledge bases whose display
+   *   name contains "Best Articles".
+   * * 'language_code=en-gb AND display_name=articles' matches all knowledge
+   *   bases whose display name contains "articles" and whose language code is
+   *   "en-gb".
+   * Note: An empty filter string (i.e. "") is a no-op and will result in no
+   * filtering.
+   * For more information about filtering, see
+   * [API Filtering](https://aip.dev/160).
+   * </pre>
+   *
+   * <code>string filter = 4;</code>
+   *
+   * @return The filter.
+   */
+  java.lang.String getFilter();
+  /**
+   *
+   *
+   * <pre>
+   * The filter expression used to filter knowledge bases returned by the list
+   * method. The expression has the following syntax:
+   *   &lt;field&gt; &lt;operator&gt; &lt;value&gt; [AND &lt;field&gt; &lt;operator&gt; &lt;value&gt;] ...
+   * The following fields and operators are supported:
+   * * display_name with has(:) operator
+   * * language_code with equals(=) operator
+   * Examples:
+   * * 'language_code=en-us' matches knowledge bases with en-us language code.
+   * * 'display_name:articles' matches knowledge bases whose display name
+   *   contains "articles".
+   * * 'display_name:"Best Articles"' matches knowledge bases whose display
+   *   name contains "Best Articles".
+   * * 'language_code=en-gb AND display_name=articles' matches all knowledge
+   *   bases whose display name contains "articles" and whose language code is
+   *   "en-gb".
+   * Note: An empty filter string (i.e. "") is a no-op and will result in no
+   * filtering.
+   * For more information about filtering, see
+   * [API Filtering](https://aip.dev/160).
+   * </pre>
+   *
+   * <code>string filter = 4;</code>
+   *
+   * @return The bytes for filter.
+   */
+  com.google.protobuf.ByteString getFilterBytes();
 }
diff --git a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ParticipantProto.java b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ParticipantProto.java
index 2d93352b6..7f57a633e 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ParticipantProto.java
+++ b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ParticipantProto.java
@@ -145,204 +145,205 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "le/api/annotations.proto\032\027google/api/cli"
           + "ent.proto\032\037google/api/field_behavior.pro"
           + "to\032\031google/api/resource.proto\032-google/cl"
-          + "oud/dialogflow/v2/audio_config.proto\032(go"
-          + "ogle/cloud/dialogflow/v2/session.proto\032\031"
-          + "google/protobuf/any.proto\032\036google/protob"
-          + "uf/duration.proto\032 google/protobuf/field"
-          + "_mask.proto\032\034google/protobuf/struct.prot"
-          + "o\032\037google/protobuf/timestamp.proto\032\027goog"
-          + "le/rpc/status.proto\"\347\004\n\013Participant\022\021\n\004n"
-          + "ame\030\001 \001(\tB\003\340A\001\022?\n\004role\030\002 \001(\0162,.google.cl"
-          + "oud.dialogflow.v2.Participant.RoleB\003\340A\005\022"
-          + "&\n\031sip_recording_media_label\030\006 \001(\tB\003\340A\001\022"
-          + "n\n\032documents_metadata_filters\030\010 \003(\0132E.go"
-          + "ogle.cloud.dialogflow.v2.Participant.Doc"
-          + "umentsMetadataFiltersEntryB\003\340A\001\032?\n\035Docum"
-          + "entsMetadataFiltersEntry\022\013\n\003key\030\001 \001(\t\022\r\n"
-          + "\005value\030\002 \001(\t:\0028\001\"P\n\004Role\022\024\n\020ROLE_UNSPECI"
-          + "FIED\020\000\022\017\n\013HUMAN_AGENT\020\001\022\023\n\017AUTOMATED_AGE"
-          + "NT\020\002\022\014\n\010END_USER\020\003:\330\001\352A\324\001\n%dialogflow.go"
-          + "ogleapis.com/Participant\022Jprojects/{proj"
-          + "ect}/conversations/{conversation}/partic"
-          + "ipants/{participant}\022_projects/{project}"
-          + "/locations/{location}/conversations/{con"
-          + "versation}/participants/{participant}\"\375\003"
-          + "\n\007Message\022\014\n\004name\030\001 \001(\t\022\024\n\007content\030\002 \001(\t"
-          + "B\003\340A\002\022\032\n\rlanguage_code\030\003 \001(\tB\003\340A\001\022\030\n\013par"
-          + "ticipant\030\004 \001(\tB\003\340A\003\022K\n\020participant_role\030"
-          + "\005 \001(\0162,.google.cloud.dialogflow.v2.Parti"
-          + "cipant.RoleB\003\340A\003\0224\n\013create_time\030\006 \001(\0132\032."
-          + "google.protobuf.TimestampB\003\340A\003\022N\n\022messag"
-          + "e_annotation\030\007 \001(\0132-.google.cloud.dialog"
-          + "flow.v2.MessageAnnotationB\003\340A\003:\304\001\352A\300\001\n!d"
-          + "ialogflow.googleapis.com/Message\022Bprojec"
-          + "ts/{project}/conversations/{conversation"
-          + "}/messages/{message}\022Wprojects/{project}"
-          + "/locations/{location}/conversations/{con"
-          + "versation}/messages/{message}\"\234\001\n\030Create"
-          + "ParticipantRequest\022=\n\006parent\030\001 \001(\tB-\340A\002\372"
-          + "A\'\022%dialogflow.googleapis.com/Participan"
-          + "t\022A\n\013participant\030\002 \001(\0132\'.google.cloud.di"
-          + "alogflow.v2.ParticipantB\003\340A\002\"T\n\025GetParti"
-          + "cipantRequest\022;\n\004name\030\001 \001(\tB-\340A\002\372A\'\n%dia"
-          + "logflow.googleapis.com/Participant\"\211\001\n\027L"
-          + "istParticipantsRequest\022=\n\006parent\030\001 \001(\tB-"
-          + "\340A\002\372A\'\022%dialogflow.googleapis.com/Partic"
-          + "ipant\022\026\n\tpage_size\030\002 \001(\005B\003\340A\001\022\027\n\npage_to"
-          + "ken\030\003 \001(\tB\003\340A\001\"r\n\030ListParticipantsRespon"
-          + "se\022=\n\014participants\030\001 \003(\0132\'.google.cloud."
-          + "dialogflow.v2.Participant\022\027\n\017next_page_t"
-          + "oken\030\002 \001(\t\"\223\001\n\030UpdateParticipantRequest\022"
-          + "A\n\013participant\030\001 \001(\0132\'.google.cloud.dial"
-          + "ogflow.v2.ParticipantB\003\340A\002\0224\n\013update_mas"
-          + "k\030\002 \001(\0132\032.google.protobuf.FieldMaskB\003\340A\002"
-          + "\"\322\003\n\025AnalyzeContentRequest\022B\n\013participan"
-          + "t\030\001 \001(\tB-\340A\002\372A\'\n%dialogflow.googleapis.c"
-          + "om/Participant\022;\n\ntext_input\030\006 \001(\0132%.goo"
-          + "gle.cloud.dialogflow.v2.TextInputH\000\022=\n\013e"
-          + "vent_input\030\010 \001(\0132&.google.cloud.dialogfl"
-          + "ow.v2.EventInputH\000\022I\n\022reply_audio_config"
-          + "\030\005 \001(\0132-.google.cloud.dialogflow.v2.Outp"
-          + "utAudioConfig\022A\n\014query_params\030\t \001(\0132+.go"
-          + "ogle.cloud.dialogflow.v2.QueryParameters"
-          + "\022N\n\023assist_query_params\030\016 \001(\01321.google.c"
-          + "loud.dialogflow.v2.AssistQueryParameters"
-          + "\022\022\n\nrequest_id\030\013 \001(\tB\007\n\005input\",\n\016DtmfPar"
-          + "ameters\022\032\n\022accepts_dtmf_input\030\001 \001(\010\"\336\003\n\026"
-          + "AnalyzeContentResponse\022\022\n\nreply_text\030\001 \001"
-          + "(\t\022<\n\013reply_audio\030\002 \001(\0132\'.google.cloud.d"
-          + "ialogflow.v2.OutputAudio\022N\n\025automated_ag"
-          + "ent_reply\030\003 \001(\0132/.google.cloud.dialogflo"
-          + "w.v2.AutomatedAgentReply\0224\n\007message\030\005 \001("
-          + "\0132#.google.cloud.dialogflow.v2.Message\022T"
-          + "\n\036human_agent_suggestion_results\030\006 \003(\0132,"
-          + ".google.cloud.dialogflow.v2.SuggestionRe"
-          + "sult\022Q\n\033end_user_suggestion_results\030\007 \003("
-          + "\0132,.google.cloud.dialogflow.v2.Suggestio"
-          + "nResult\022C\n\017dtmf_parameters\030\t \001(\0132*.googl"
-          + "e.cloud.dialogflow.v2.DtmfParameters\"\375\001\n"
-          + "\026SuggestArticlesRequest\022=\n\006parent\030\001 \001(\tB"
-          + "-\340A\002\372A\'\n%dialogflow.googleapis.com/Parti"
-          + "cipant\022>\n\016latest_message\030\002 \001(\tB&\372A#\n!dia"
-          + "logflow.googleapis.com/Message\022\024\n\014contex"
-          + "t_size\030\003 \001(\005\022N\n\023assist_query_params\030\004 \001("
-          + "\01321.google.cloud.dialogflow.v2.AssistQue"
-          + "ryParameters\"\213\001\n\027SuggestArticlesResponse"
-          + "\022B\n\017article_answers\030\001 \003(\0132).google.cloud"
-          + ".dialogflow.v2.ArticleAnswer\022\026\n\016latest_m"
-          + "essage\030\002 \001(\t\022\024\n\014context_size\030\003 \001(\005\"\377\001\n\030S"
-          + "uggestFaqAnswersRequest\022=\n\006parent\030\001 \001(\tB"
-          + "-\340A\002\372A\'\n%dialogflow.googleapis.com/Parti"
-          + "cipant\022>\n\016latest_message\030\002 \001(\tB&\372A#\n!dia"
-          + "logflow.googleapis.com/Message\022\024\n\014contex"
-          + "t_size\030\003 \001(\005\022N\n\023assist_query_params\030\004 \001("
-          + "\01321.google.cloud.dialogflow.v2.AssistQue"
-          + "ryParameters\"\205\001\n\031SuggestFaqAnswersRespon"
-          + "se\022:\n\013faq_answers\030\001 \003(\0132%.google.cloud.d"
-          + "ialogflow.v2.FaqAnswer\022\026\n\016latest_message"
-          + "\030\002 \001(\t\022\024\n\014context_size\030\003 \001(\005\"[\n\013OutputAu"
-          + "dio\022=\n\006config\030\001 \001(\0132-.google.cloud.dialo"
-          + "gflow.v2.OutputAudioConfig\022\r\n\005audio\030\002 \001("
-          + "\014\"\317\002\n\023AutomatedAgentReply\022P\n\026detect_inte"
-          + "nt_response\030\001 \001(\01320.google.cloud.dialogf"
-          + "low.v2.DetectIntentResponse\022k\n\032automated"
-          + "_agent_reply_type\030\007 \001(\0162G.google.cloud.d"
-          + "ialogflow.v2.AutomatedAgentReply.Automat"
-          + "edAgentReplyType\022\032\n\022allow_cancellation\030\010"
-          + " \001(\010\"]\n\027AutomatedAgentReplyType\022*\n&AUTOM"
-          + "ATED_AGENT_REPLY_TYPE_UNSPECIFIED\020\000\022\013\n\007P"
-          + "ARTIAL\020\001\022\t\n\005FINAL\020\002\"\344\001\n\rArticleAnswer\022\r\n"
-          + "\005title\030\001 \001(\t\022\013\n\003uri\030\002 \001(\t\022\020\n\010snippets\030\003 "
-          + "\003(\t\022\022\n\nconfidence\030\004 \001(\002\022I\n\010metadata\030\005 \003("
-          + "\01327.google.cloud.dialogflow.v2.ArticleAn"
-          + "swer.MetadataEntry\022\025\n\ranswer_record\030\006 \001("
-          + "\t\032/\n\rMetadataEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value"
-          + "\030\002 \001(\t:\0028\001\"\340\001\n\tFaqAnswer\022\016\n\006answer\030\001 \001(\t"
-          + "\022\022\n\nconfidence\030\002 \001(\002\022\020\n\010question\030\003 \001(\t\022\016"
-          + "\n\006source\030\004 \001(\t\022E\n\010metadata\030\005 \003(\01323.googl"
-          + "e.cloud.dialogflow.v2.FaqAnswer.Metadata"
-          + "Entry\022\025\n\ranswer_record\030\006 \001(\t\032/\n\rMetadata"
-          + "Entry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"\207\002"
-          + "\n\020SuggestionResult\022#\n\005error\030\001 \001(\0132\022.goog"
-          + "le.rpc.StatusH\000\022X\n\031suggest_articles_resp"
-          + "onse\030\002 \001(\01323.google.cloud.dialogflow.v2."
-          + "SuggestArticlesResponseH\000\022]\n\034suggest_faq"
-          + "_answers_response\030\003 \001(\01325.google.cloud.d"
-          + "ialogflow.v2.SuggestFaqAnswersResponseH\000"
-          + "B\025\n\023suggestion_response\"j\n\024AnnotatedMess"
-          + "agePart\022\014\n\004text\030\001 \001(\t\022\023\n\013entity_type\030\002 \001"
-          + "(\t\022/\n\017formatted_value\030\003 \001(\0132\026.google.pro"
-          + "tobuf.Value\"n\n\021MessageAnnotation\022?\n\005part"
-          + "s\030\001 \003(\01320.google.cloud.dialogflow.v2.Ann"
-          + "otatedMessagePart\022\030\n\020contain_entities\030\002 "
-          + "\001(\010\"\315\001\n\025AssistQueryParameters\022s\n\032documen"
-          + "ts_metadata_filters\030\001 \003(\0132O.google.cloud"
-          + ".dialogflow.v2.AssistQueryParameters.Doc"
-          + "umentsMetadataFiltersEntry\032?\n\035DocumentsM"
-          + "etadataFiltersEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005valu"
-          + "e\030\002 \001(\t:\0028\0012\377\021\n\014Participants\022\245\002\n\021CreateP"
-          + "articipant\0224.google.cloud.dialogflow.v2."
-          + "CreateParticipantRequest\032\'.google.cloud."
-          + "dialogflow.v2.Participant\"\260\001\202\323\344\223\002\224\001\"4/v2"
-          + "/{parent=projects/*/conversations/*}/par"
-          + "ticipants:\013participantZO\"@/v2/{parent=pr"
-          + "ojects/*/locations/*/conversations/*}/pa"
-          + "rticipants:\013participant\332A\022parent,partici"
-          + "pant\022\366\001\n\016GetParticipant\0221.google.cloud.d"
-          + "ialogflow.v2.GetParticipantRequest\032\'.goo"
-          + "gle.cloud.dialogflow.v2.Participant\"\207\001\202\323"
-          + "\344\223\002z\0224/v2/{name=projects/*/conversations"
-          + "/*/participants/*}ZB\022@/v2/{name=projects"
-          + "/*/locations/*/conversations/*/participa"
-          + "nts/*}\332A\004name\022\211\002\n\020ListParticipants\0223.goo"
-          + "gle.cloud.dialogflow.v2.ListParticipants"
-          + "Request\0324.google.cloud.dialogflow.v2.Lis"
-          + "tParticipantsResponse\"\211\001\202\323\344\223\002z\0224/v2/{par"
-          + "ent=projects/*/conversations/*}/particip"
-          + "antsZB\022@/v2/{parent=projects/*/locations"
-          + "/*/conversations/*}/participants\332A\006paren"
-          + "t\022\302\002\n\021UpdateParticipant\0224.google.cloud.d"
-          + "ialogflow.v2.UpdateParticipantRequest\032\'."
-          + "google.cloud.dialogflow.v2.Participant\"\315"
-          + "\001\202\323\344\223\002\254\0012@/v2/{participant.name=projects"
-          + "/*/conversations/*/participants/*}:\013part"
-          + "icipantZ[2L/v2/{participant.name=project"
-          + "s/*/locations/*/conversations/*/particip"
-          + "ants/*}:\013participant\332A\027participant,updat"
-          + "e_mask\022\340\002\n\016AnalyzeContent\0221.google.cloud"
-          + ".dialogflow.v2.AnalyzeContentRequest\0322.g"
-          + "oogle.cloud.dialogflow.v2.AnalyzeContent"
-          + "Response\"\346\001\202\323\344\223\002\254\001\"J/v2/{participant=pro"
-          + "jects/*/conversations/*/participants/*}:"
-          + "analyzeContent:\001*Z[\"V/v2/{participant=pr"
-          + "ojects/*/locations/*/conversations/*/par"
-          + "ticipants/*}:analyzeContent:\001*\332A\026partici"
-          + "pant,text_input\332A\027participant,event_inpu"
-          + "t\022\311\002\n\017SuggestArticles\0222.google.cloud.dia"
-          + "logflow.v2.SuggestArticlesRequest\0323.goog"
-          + "le.cloud.dialogflow.v2.SuggestArticlesRe"
-          + "sponse\"\314\001\202\323\344\223\002\274\001\"R/v2/{parent=projects/*"
-          + "/conversations/*/participants/*}/suggest"
-          + "ions:suggestArticles:\001*Zc\"^/v2/{parent=p"
-          + "rojects/*/locations/*/conversations/*/pa"
-          + "rticipants/*}/suggestions:suggestArticle"
-          + "s:\001*\332A\006parent\022\323\002\n\021SuggestFaqAnswers\0224.go"
-          + "ogle.cloud.dialogflow.v2.SuggestFaqAnswe"
-          + "rsRequest\0325.google.cloud.dialogflow.v2.S"
-          + "uggestFaqAnswersResponse\"\320\001\202\323\344\223\002\300\001\"T/v2/"
-          + "{parent=projects/*/conversations/*/parti"
-          + "cipants/*}/suggestions:suggestFaqAnswers"
-          + ":\001*Ze\"`/v2/{parent=projects/*/locations/"
-          + "*/conversations/*/participants/*}/sugges"
-          + "tions:suggestFaqAnswers:\001*\332A\006parent\032x\312A\031"
-          + "dialogflow.googleapis.com\322AYhttps://www."
-          + "googleapis.com/auth/cloud-platform,https"
-          + "://www.googleapis.com/auth/dialogflowB\237\001"
-          + "\n\036com.google.cloud.dialogflow.v2B\020Partic"
-          + "ipantProtoP\001ZDgoogle.golang.org/genproto"
-          + "/googleapis/cloud/dialogflow/v2;dialogfl"
-          + "ow\370\001\001\242\002\002DF\252\002\032Google.Cloud.Dialogflow.V2b"
-          + "\006proto3"
+          + "oud/dialogflow/v2/audio_config.proto\032$go"
+          + "ogle/cloud/dialogflow/v2/gcs.proto\032(goog"
+          + "le/cloud/dialogflow/v2/session.proto\032\031go"
+          + "ogle/protobuf/any.proto\032\036google/protobuf"
+          + "/duration.proto\032 google/protobuf/field_m"
+          + "ask.proto\032\034google/protobuf/struct.proto\032"
+          + "\037google/protobuf/timestamp.proto\032\027google"
+          + "/rpc/status.proto\"\347\004\n\013Participant\022\021\n\004nam"
+          + "e\030\001 \001(\tB\003\340A\001\022?\n\004role\030\002 \001(\0162,.google.clou"
+          + "d.dialogflow.v2.Participant.RoleB\003\340A\005\022&\n"
+          + "\031sip_recording_media_label\030\006 \001(\tB\003\340A\001\022n\n"
+          + "\032documents_metadata_filters\030\010 \003(\0132E.goog"
+          + "le.cloud.dialogflow.v2.Participant.Docum"
+          + "entsMetadataFiltersEntryB\003\340A\001\032?\n\035Documen"
+          + "tsMetadataFiltersEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005v"
+          + "alue\030\002 \001(\t:\0028\001\"P\n\004Role\022\024\n\020ROLE_UNSPECIFI"
+          + "ED\020\000\022\017\n\013HUMAN_AGENT\020\001\022\023\n\017AUTOMATED_AGENT"
+          + "\020\002\022\014\n\010END_USER\020\003:\330\001\352A\324\001\n%dialogflow.goog"
+          + "leapis.com/Participant\022Jprojects/{projec"
+          + "t}/conversations/{conversation}/particip"
+          + "ants/{participant}\022_projects/{project}/l"
+          + "ocations/{location}/conversations/{conve"
+          + "rsation}/participants/{participant}\"\375\003\n\007"
+          + "Message\022\014\n\004name\030\001 \001(\t\022\024\n\007content\030\002 \001(\tB\003"
+          + "\340A\002\022\032\n\rlanguage_code\030\003 \001(\tB\003\340A\001\022\030\n\013parti"
+          + "cipant\030\004 \001(\tB\003\340A\003\022K\n\020participant_role\030\005 "
+          + "\001(\0162,.google.cloud.dialogflow.v2.Partici"
+          + "pant.RoleB\003\340A\003\0224\n\013create_time\030\006 \001(\0132\032.go"
+          + "ogle.protobuf.TimestampB\003\340A\003\022N\n\022message_"
+          + "annotation\030\007 \001(\0132-.google.cloud.dialogfl"
+          + "ow.v2.MessageAnnotationB\003\340A\003:\304\001\352A\300\001\n!dia"
+          + "logflow.googleapis.com/Message\022Bprojects"
+          + "/{project}/conversations/{conversation}/"
+          + "messages/{message}\022Wprojects/{project}/l"
+          + "ocations/{location}/conversations/{conve"
+          + "rsation}/messages/{message}\"\234\001\n\030CreatePa"
+          + "rticipantRequest\022=\n\006parent\030\001 \001(\tB-\340A\002\372A\'"
+          + "\022%dialogflow.googleapis.com/Participant\022"
+          + "A\n\013participant\030\002 \001(\0132\'.google.cloud.dial"
+          + "ogflow.v2.ParticipantB\003\340A\002\"T\n\025GetPartici"
+          + "pantRequest\022;\n\004name\030\001 \001(\tB-\340A\002\372A\'\n%dialo"
+          + "gflow.googleapis.com/Participant\"\211\001\n\027Lis"
+          + "tParticipantsRequest\022=\n\006parent\030\001 \001(\tB-\340A"
+          + "\002\372A\'\022%dialogflow.googleapis.com/Particip"
+          + "ant\022\026\n\tpage_size\030\002 \001(\005B\003\340A\001\022\027\n\npage_toke"
+          + "n\030\003 \001(\tB\003\340A\001\"r\n\030ListParticipantsResponse"
+          + "\022=\n\014participants\030\001 \003(\0132\'.google.cloud.di"
+          + "alogflow.v2.Participant\022\027\n\017next_page_tok"
+          + "en\030\002 \001(\t\"\223\001\n\030UpdateParticipantRequest\022A\n"
+          + "\013participant\030\001 \001(\0132\'.google.cloud.dialog"
+          + "flow.v2.ParticipantB\003\340A\002\0224\n\013update_mask\030"
+          + "\002 \001(\0132\032.google.protobuf.FieldMaskB\003\340A\002\"\322"
+          + "\003\n\025AnalyzeContentRequest\022B\n\013participant\030"
+          + "\001 \001(\tB-\340A\002\372A\'\n%dialogflow.googleapis.com"
+          + "/Participant\022;\n\ntext_input\030\006 \001(\0132%.googl"
+          + "e.cloud.dialogflow.v2.TextInputH\000\022=\n\013eve"
+          + "nt_input\030\010 \001(\0132&.google.cloud.dialogflow"
+          + ".v2.EventInputH\000\022I\n\022reply_audio_config\030\005"
+          + " \001(\0132-.google.cloud.dialogflow.v2.Output"
+          + "AudioConfig\022A\n\014query_params\030\t \001(\0132+.goog"
+          + "le.cloud.dialogflow.v2.QueryParameters\022N"
+          + "\n\023assist_query_params\030\016 \001(\01321.google.clo"
+          + "ud.dialogflow.v2.AssistQueryParameters\022\022"
+          + "\n\nrequest_id\030\013 \001(\tB\007\n\005input\",\n\016DtmfParam"
+          + "eters\022\032\n\022accepts_dtmf_input\030\001 \001(\010\"\336\003\n\026An"
+          + "alyzeContentResponse\022\022\n\nreply_text\030\001 \001(\t"
+          + "\022<\n\013reply_audio\030\002 \001(\0132\'.google.cloud.dia"
+          + "logflow.v2.OutputAudio\022N\n\025automated_agen"
+          + "t_reply\030\003 \001(\0132/.google.cloud.dialogflow."
+          + "v2.AutomatedAgentReply\0224\n\007message\030\005 \001(\0132"
+          + "#.google.cloud.dialogflow.v2.Message\022T\n\036"
+          + "human_agent_suggestion_results\030\006 \003(\0132,.g"
+          + "oogle.cloud.dialogflow.v2.SuggestionResu"
+          + "lt\022Q\n\033end_user_suggestion_results\030\007 \003(\0132"
+          + ",.google.cloud.dialogflow.v2.SuggestionR"
+          + "esult\022C\n\017dtmf_parameters\030\t \001(\0132*.google."
+          + "cloud.dialogflow.v2.DtmfParameters\"\375\001\n\026S"
+          + "uggestArticlesRequest\022=\n\006parent\030\001 \001(\tB-\340"
+          + "A\002\372A\'\n%dialogflow.googleapis.com/Partici"
+          + "pant\022>\n\016latest_message\030\002 \001(\tB&\372A#\n!dialo"
+          + "gflow.googleapis.com/Message\022\024\n\014context_"
+          + "size\030\003 \001(\005\022N\n\023assist_query_params\030\004 \001(\0132"
+          + "1.google.cloud.dialogflow.v2.AssistQuery"
+          + "Parameters\"\213\001\n\027SuggestArticlesResponse\022B"
+          + "\n\017article_answers\030\001 \003(\0132).google.cloud.d"
+          + "ialogflow.v2.ArticleAnswer\022\026\n\016latest_mes"
+          + "sage\030\002 \001(\t\022\024\n\014context_size\030\003 \001(\005\"\377\001\n\030Sug"
+          + "gestFaqAnswersRequest\022=\n\006parent\030\001 \001(\tB-\340"
+          + "A\002\372A\'\n%dialogflow.googleapis.com/Partici"
+          + "pant\022>\n\016latest_message\030\002 \001(\tB&\372A#\n!dialo"
+          + "gflow.googleapis.com/Message\022\024\n\014context_"
+          + "size\030\003 \001(\005\022N\n\023assist_query_params\030\004 \001(\0132"
+          + "1.google.cloud.dialogflow.v2.AssistQuery"
+          + "Parameters\"\205\001\n\031SuggestFaqAnswersResponse"
+          + "\022:\n\013faq_answers\030\001 \003(\0132%.google.cloud.dia"
+          + "logflow.v2.FaqAnswer\022\026\n\016latest_message\030\002"
+          + " \001(\t\022\024\n\014context_size\030\003 \001(\005\"[\n\013OutputAudi"
+          + "o\022=\n\006config\030\001 \001(\0132-.google.cloud.dialogf"
+          + "low.v2.OutputAudioConfig\022\r\n\005audio\030\002 \001(\014\""
+          + "\317\002\n\023AutomatedAgentReply\022P\n\026detect_intent"
+          + "_response\030\001 \001(\01320.google.cloud.dialogflo"
+          + "w.v2.DetectIntentResponse\022k\n\032automated_a"
+          + "gent_reply_type\030\007 \001(\0162G.google.cloud.dia"
+          + "logflow.v2.AutomatedAgentReply.Automated"
+          + "AgentReplyType\022\032\n\022allow_cancellation\030\010 \001"
+          + "(\010\"]\n\027AutomatedAgentReplyType\022*\n&AUTOMAT"
+          + "ED_AGENT_REPLY_TYPE_UNSPECIFIED\020\000\022\013\n\007PAR"
+          + "TIAL\020\001\022\t\n\005FINAL\020\002\"\344\001\n\rArticleAnswer\022\r\n\005t"
+          + "itle\030\001 \001(\t\022\013\n\003uri\030\002 \001(\t\022\020\n\010snippets\030\003 \003("
+          + "\t\022\022\n\nconfidence\030\004 \001(\002\022I\n\010metadata\030\005 \003(\0132"
+          + "7.google.cloud.dialogflow.v2.ArticleAnsw"
+          + "er.MetadataEntry\022\025\n\ranswer_record\030\006 \001(\t\032"
+          + "/\n\rMetadataEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002"
+          + " \001(\t:\0028\001\"\340\001\n\tFaqAnswer\022\016\n\006answer\030\001 \001(\t\022\022"
+          + "\n\nconfidence\030\002 \001(\002\022\020\n\010question\030\003 \001(\t\022\016\n\006"
+          + "source\030\004 \001(\t\022E\n\010metadata\030\005 \003(\01323.google."
+          + "cloud.dialogflow.v2.FaqAnswer.MetadataEn"
+          + "try\022\025\n\ranswer_record\030\006 \001(\t\032/\n\rMetadataEn"
+          + "try\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"\207\002\n\020"
+          + "SuggestionResult\022#\n\005error\030\001 \001(\0132\022.google"
+          + ".rpc.StatusH\000\022X\n\031suggest_articles_respon"
+          + "se\030\002 \001(\01323.google.cloud.dialogflow.v2.Su"
+          + "ggestArticlesResponseH\000\022]\n\034suggest_faq_a"
+          + "nswers_response\030\003 \001(\01325.google.cloud.dia"
+          + "logflow.v2.SuggestFaqAnswersResponseH\000B\025"
+          + "\n\023suggestion_response\"j\n\024AnnotatedMessag"
+          + "ePart\022\014\n\004text\030\001 \001(\t\022\023\n\013entity_type\030\002 \001(\t"
+          + "\022/\n\017formatted_value\030\003 \001(\0132\026.google.proto"
+          + "buf.Value\"n\n\021MessageAnnotation\022?\n\005parts\030"
+          + "\001 \003(\01320.google.cloud.dialogflow.v2.Annot"
+          + "atedMessagePart\022\030\n\020contain_entities\030\002 \001("
+          + "\010\"\315\001\n\025AssistQueryParameters\022s\n\032documents"
+          + "_metadata_filters\030\001 \003(\0132O.google.cloud.d"
+          + "ialogflow.v2.AssistQueryParameters.Docum"
+          + "entsMetadataFiltersEntry\032?\n\035DocumentsMet"
+          + "adataFiltersEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030"
+          + "\002 \001(\t:\0028\0012\377\021\n\014Participants\022\245\002\n\021CreatePar"
+          + "ticipant\0224.google.cloud.dialogflow.v2.Cr"
+          + "eateParticipantRequest\032\'.google.cloud.di"
+          + "alogflow.v2.Participant\"\260\001\202\323\344\223\002\224\001\"4/v2/{"
+          + "parent=projects/*/conversations/*}/parti"
+          + "cipants:\013participantZO\"@/v2/{parent=proj"
+          + "ects/*/locations/*/conversations/*}/part"
+          + "icipants:\013participant\332A\022parent,participa"
+          + "nt\022\366\001\n\016GetParticipant\0221.google.cloud.dia"
+          + "logflow.v2.GetParticipantRequest\032\'.googl"
+          + "e.cloud.dialogflow.v2.Participant\"\207\001\202\323\344\223"
+          + "\002z\0224/v2/{name=projects/*/conversations/*"
+          + "/participants/*}ZB\022@/v2/{name=projects/*"
+          + "/locations/*/conversations/*/participant"
+          + "s/*}\332A\004name\022\211\002\n\020ListParticipants\0223.googl"
+          + "e.cloud.dialogflow.v2.ListParticipantsRe"
+          + "quest\0324.google.cloud.dialogflow.v2.ListP"
+          + "articipantsResponse\"\211\001\202\323\344\223\002z\0224/v2/{paren"
+          + "t=projects/*/conversations/*}/participan"
+          + "tsZB\022@/v2/{parent=projects/*/locations/*"
+          + "/conversations/*}/participants\332A\006parent\022"
+          + "\302\002\n\021UpdateParticipant\0224.google.cloud.dia"
+          + "logflow.v2.UpdateParticipantRequest\032\'.go"
+          + "ogle.cloud.dialogflow.v2.Participant\"\315\001\202"
+          + "\323\344\223\002\254\0012@/v2/{participant.name=projects/*"
+          + "/conversations/*/participants/*}:\013partic"
+          + "ipantZ[2L/v2/{participant.name=projects/"
+          + "*/locations/*/conversations/*/participan"
+          + "ts/*}:\013participant\332A\027participant,update_"
+          + "mask\022\340\002\n\016AnalyzeContent\0221.google.cloud.d"
+          + "ialogflow.v2.AnalyzeContentRequest\0322.goo"
+          + "gle.cloud.dialogflow.v2.AnalyzeContentRe"
+          + "sponse\"\346\001\202\323\344\223\002\254\001\"J/v2/{participant=proje"
+          + "cts/*/conversations/*/participants/*}:an"
+          + "alyzeContent:\001*Z[\"V/v2/{participant=proj"
+          + "ects/*/locations/*/conversations/*/parti"
+          + "cipants/*}:analyzeContent:\001*\332A\026participa"
+          + "nt,text_input\332A\027participant,event_input\022"
+          + "\311\002\n\017SuggestArticles\0222.google.cloud.dialo"
+          + "gflow.v2.SuggestArticlesRequest\0323.google"
+          + ".cloud.dialogflow.v2.SuggestArticlesResp"
+          + "onse\"\314\001\202\323\344\223\002\274\001\"R/v2/{parent=projects/*/c"
+          + "onversations/*/participants/*}/suggestio"
+          + "ns:suggestArticles:\001*Zc\"^/v2/{parent=pro"
+          + "jects/*/locations/*/conversations/*/part"
+          + "icipants/*}/suggestions:suggestArticles:"
+          + "\001*\332A\006parent\022\323\002\n\021SuggestFaqAnswers\0224.goog"
+          + "le.cloud.dialogflow.v2.SuggestFaqAnswers"
+          + "Request\0325.google.cloud.dialogflow.v2.Sug"
+          + "gestFaqAnswersResponse\"\320\001\202\323\344\223\002\300\001\"T/v2/{p"
+          + "arent=projects/*/conversations/*/partici"
+          + "pants/*}/suggestions:suggestFaqAnswers:\001"
+          + "*Ze\"`/v2/{parent=projects/*/locations/*/"
+          + "conversations/*/participants/*}/suggesti"
+          + "ons:suggestFaqAnswers:\001*\332A\006parent\032x\312A\031di"
+          + "alogflow.googleapis.com\322AYhttps://www.go"
+          + "ogleapis.com/auth/cloud-platform,https:/"
+          + "/www.googleapis.com/auth/dialogflowB\237\001\n\036"
+          + "com.google.cloud.dialogflow.v2B\020Particip"
+          + "antProtoP\001ZDgoogle.golang.org/genproto/g"
+          + "oogleapis/cloud/dialogflow/v2;dialogflow"
+          + "\370\001\001\242\002\002DF\252\002\032Google.Cloud.Dialogflow.V2b\006p"
+          + "roto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -353,6 +354,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               com.google.api.FieldBehaviorProto.getDescriptor(),
               com.google.api.ResourceProto.getDescriptor(),
               com.google.cloud.dialogflow.v2.AudioConfigProto.getDescriptor(),
+              com.google.cloud.dialogflow.v2.GcsProto.getDescriptor(),
               com.google.cloud.dialogflow.v2.SessionProto.getDescriptor(),
               com.google.protobuf.AnyProto.getDescriptor(),
               com.google.protobuf.DurationProto.getDescriptor(),
@@ -606,6 +608,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
     com.google.api.FieldBehaviorProto.getDescriptor();
     com.google.api.ResourceProto.getDescriptor();
     com.google.cloud.dialogflow.v2.AudioConfigProto.getDescriptor();
+    com.google.cloud.dialogflow.v2.GcsProto.getDescriptor();
     com.google.cloud.dialogflow.v2.SessionProto.getDescriptor();
     com.google.protobuf.AnyProto.getDescriptor();
     com.google.protobuf.DurationProto.getDescriptor();
diff --git a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ReloadDocumentRequest.java b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ReloadDocumentRequest.java
index dd811c464..712be7ced 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ReloadDocumentRequest.java
+++ b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ReloadDocumentRequest.java
@@ -84,6 +84,16 @@ private ReloadDocumentRequest(
               source_ = s;
               break;
             }
+          case 32:
+            {
+              importGcsCustomMetadata_ = input.readBool();
+              break;
+            }
+          case 40:
+            {
+              smartMessagingPartialUpdate_ = input.readBool();
+              break;
+            }
           default:
             {
               if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
@@ -298,6 +308,44 @@ public com.google.protobuf.ByteString getContentUriBytes() {
     }
   }
 
+  public static final int IMPORT_GCS_CUSTOM_METADATA_FIELD_NUMBER = 4;
+  private boolean importGcsCustomMetadata_;
+  /**
+   *
+   *
+   * <pre>
+   * Optional. Whether to import custom metadata from Google Cloud Storage.
+   * Only valid when the document source is Google Cloud Storage URI.
+   * </pre>
+   *
+   * <code>bool import_gcs_custom_metadata = 4 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @return The importGcsCustomMetadata.
+   */
+  @java.lang.Override
+  public boolean getImportGcsCustomMetadata() {
+    return importGcsCustomMetadata_;
+  }
+
+  public static final int SMART_MESSAGING_PARTIAL_UPDATE_FIELD_NUMBER = 5;
+  private boolean smartMessagingPartialUpdate_;
+  /**
+   *
+   *
+   * <pre>
+   * Optional. When enabled, the reload request is to apply partial update to the smart
+   * messaging allowlist.
+   * </pre>
+   *
+   * <code>bool smart_messaging_partial_update = 5 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @return The smartMessagingPartialUpdate.
+   */
+  @java.lang.Override
+  public boolean getSmartMessagingPartialUpdate() {
+    return smartMessagingPartialUpdate_;
+  }
+
   private byte memoizedIsInitialized = -1;
 
   @java.lang.Override
@@ -318,6 +366,12 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (sourceCase_ == 3) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 3, source_);
     }
+    if (importGcsCustomMetadata_ != false) {
+      output.writeBool(4, importGcsCustomMetadata_);
+    }
+    if (smartMessagingPartialUpdate_ != false) {
+      output.writeBool(5, smartMessagingPartialUpdate_);
+    }
     unknownFields.writeTo(output);
   }
 
@@ -333,6 +387,13 @@ public int getSerializedSize() {
     if (sourceCase_ == 3) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(3, source_);
     }
+    if (importGcsCustomMetadata_ != false) {
+      size += com.google.protobuf.CodedOutputStream.computeBoolSize(4, importGcsCustomMetadata_);
+    }
+    if (smartMessagingPartialUpdate_ != false) {
+      size +=
+          com.google.protobuf.CodedOutputStream.computeBoolSize(5, smartMessagingPartialUpdate_);
+    }
     size += unknownFields.getSerializedSize();
     memoizedSize = size;
     return size;
@@ -350,6 +411,8 @@ public boolean equals(final java.lang.Object obj) {
         (com.google.cloud.dialogflow.v2.ReloadDocumentRequest) obj;
 
     if (!getName().equals(other.getName())) return false;
+    if (getImportGcsCustomMetadata() != other.getImportGcsCustomMetadata()) return false;
+    if (getSmartMessagingPartialUpdate() != other.getSmartMessagingPartialUpdate()) return false;
     if (!getSourceCase().equals(other.getSourceCase())) return false;
     switch (sourceCase_) {
       case 3:
@@ -371,6 +434,10 @@ public int hashCode() {
     hash = (19 * hash) + getDescriptor().hashCode();
     hash = (37 * hash) + NAME_FIELD_NUMBER;
     hash = (53 * hash) + getName().hashCode();
+    hash = (37 * hash) + IMPORT_GCS_CUSTOM_METADATA_FIELD_NUMBER;
+    hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(getImportGcsCustomMetadata());
+    hash = (37 * hash) + SMART_MESSAGING_PARTIAL_UPDATE_FIELD_NUMBER;
+    hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(getSmartMessagingPartialUpdate());
     switch (sourceCase_) {
       case 3:
         hash = (37 * hash) + CONTENT_URI_FIELD_NUMBER;
@@ -526,6 +593,10 @@ public Builder clear() {
       super.clear();
       name_ = "";
 
+      importGcsCustomMetadata_ = false;
+
+      smartMessagingPartialUpdate_ = false;
+
       sourceCase_ = 0;
       source_ = null;
       return this;
@@ -559,6 +630,8 @@ public com.google.cloud.dialogflow.v2.ReloadDocumentRequest buildPartial() {
       if (sourceCase_ == 3) {
         result.source_ = source_;
       }
+      result.importGcsCustomMetadata_ = importGcsCustomMetadata_;
+      result.smartMessagingPartialUpdate_ = smartMessagingPartialUpdate_;
       result.sourceCase_ = sourceCase_;
       onBuilt();
       return result;
@@ -614,6 +687,12 @@ public Builder mergeFrom(com.google.cloud.dialogflow.v2.ReloadDocumentRequest ot
         name_ = other.name_;
         onChanged();
       }
+      if (other.getImportGcsCustomMetadata() != false) {
+        setImportGcsCustomMetadata(other.getImportGcsCustomMetadata());
+      }
+      if (other.getSmartMessagingPartialUpdate() != false) {
+        setSmartMessagingPartialUpdate(other.getSmartMessagingPartialUpdate());
+      }
       switch (other.getSourceCase()) {
         case CONTENT_URI:
           {
@@ -949,6 +1028,119 @@ public Builder setContentUriBytes(com.google.protobuf.ByteString value) {
       return this;
     }
 
+    private boolean importGcsCustomMetadata_;
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Whether to import custom metadata from Google Cloud Storage.
+     * Only valid when the document source is Google Cloud Storage URI.
+     * </pre>
+     *
+     * <code>bool import_gcs_custom_metadata = 4 [(.google.api.field_behavior) = OPTIONAL];</code>
+     *
+     * @return The importGcsCustomMetadata.
+     */
+    @java.lang.Override
+    public boolean getImportGcsCustomMetadata() {
+      return importGcsCustomMetadata_;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Whether to import custom metadata from Google Cloud Storage.
+     * Only valid when the document source is Google Cloud Storage URI.
+     * </pre>
+     *
+     * <code>bool import_gcs_custom_metadata = 4 [(.google.api.field_behavior) = OPTIONAL];</code>
+     *
+     * @param value The importGcsCustomMetadata to set.
+     * @return This builder for chaining.
+     */
+    public Builder setImportGcsCustomMetadata(boolean value) {
+
+      importGcsCustomMetadata_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. Whether to import custom metadata from Google Cloud Storage.
+     * Only valid when the document source is Google Cloud Storage URI.
+     * </pre>
+     *
+     * <code>bool import_gcs_custom_metadata = 4 [(.google.api.field_behavior) = OPTIONAL];</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearImportGcsCustomMetadata() {
+
+      importGcsCustomMetadata_ = false;
+      onChanged();
+      return this;
+    }
+
+    private boolean smartMessagingPartialUpdate_;
+    /**
+     *
+     *
+     * <pre>
+     * Optional. When enabled, the reload request is to apply partial update to the smart
+     * messaging allowlist.
+     * </pre>
+     *
+     * <code>bool smart_messaging_partial_update = 5 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     *
+     * @return The smartMessagingPartialUpdate.
+     */
+    @java.lang.Override
+    public boolean getSmartMessagingPartialUpdate() {
+      return smartMessagingPartialUpdate_;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. When enabled, the reload request is to apply partial update to the smart
+     * messaging allowlist.
+     * </pre>
+     *
+     * <code>bool smart_messaging_partial_update = 5 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     *
+     * @param value The smartMessagingPartialUpdate to set.
+     * @return This builder for chaining.
+     */
+    public Builder setSmartMessagingPartialUpdate(boolean value) {
+
+      smartMessagingPartialUpdate_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * Optional. When enabled, the reload request is to apply partial update to the smart
+     * messaging allowlist.
+     * </pre>
+     *
+     * <code>bool smart_messaging_partial_update = 5 [(.google.api.field_behavior) = OPTIONAL];
+     * </code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearSmartMessagingPartialUpdate() {
+
+      smartMessagingPartialUpdate_ = false;
+      onChanged();
+      return this;
+    }
+
     @java.lang.Override
     public final Builder setUnknownFields(final com.google.protobuf.UnknownFieldSet unknownFields) {
       return super.setUnknownFields(unknownFields);
diff --git a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ReloadDocumentRequestOrBuilder.java b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ReloadDocumentRequestOrBuilder.java
index 32bc23e8d..cc21cb8b8 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ReloadDocumentRequestOrBuilder.java
+++ b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/ReloadDocumentRequestOrBuilder.java
@@ -102,5 +102,33 @@ public interface ReloadDocumentRequestOrBuilder
    */
   com.google.protobuf.ByteString getContentUriBytes();
 
+  /**
+   *
+   *
+   * <pre>
+   * Optional. Whether to import custom metadata from Google Cloud Storage.
+   * Only valid when the document source is Google Cloud Storage URI.
+   * </pre>
+   *
+   * <code>bool import_gcs_custom_metadata = 4 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @return The importGcsCustomMetadata.
+   */
+  boolean getImportGcsCustomMetadata();
+
+  /**
+   *
+   *
+   * <pre>
+   * Optional. When enabled, the reload request is to apply partial update to the smart
+   * messaging allowlist.
+   * </pre>
+   *
+   * <code>bool smart_messaging_partial_update = 5 [(.google.api.field_behavior) = OPTIONAL];</code>
+   *
+   * @return The smartMessagingPartialUpdate.
+   */
+  boolean getSmartMessagingPartialUpdate();
+
   public com.google.cloud.dialogflow.v2.ReloadDocumentRequest.SourceCase getSourceCase();
 }
diff --git a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/SessionProto.java b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/SessionProto.java
index e75cf152c..596f75bb4 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/SessionProto.java
+++ b/proto-google-cloud-dialogflow-v2/src/main/java/com/google/cloud/dialogflow/v2/SessionProto.java
@@ -98,135 +98,136 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "proto\032\037google/api/field_behavior.proto\032\031"
           + "google/api/resource.proto\032-google/cloud/"
           + "dialogflow/v2/audio_config.proto\032(google"
-          + "/cloud/dialogflow/v2/context.proto\032\'goog"
-          + "le/cloud/dialogflow/v2/intent.proto\0324goo"
-          + "gle/cloud/dialogflow/v2/session_entity_t"
-          + "ype.proto\032\036google/protobuf/duration.prot"
-          + "o\032 google/protobuf/field_mask.proto\032\034goo"
-          + "gle/protobuf/struct.proto\032\027google/rpc/st"
-          + "atus.proto\032\030google/type/latlng.proto\"\365\002\n"
-          + "\023DetectIntentRequest\022:\n\007session\030\001 \001(\tB)\340"
-          + "A\002\372A#\n!dialogflow.googleapis.com/Session"
-          + "\022A\n\014query_params\030\002 \001(\0132+.google.cloud.di"
-          + "alogflow.v2.QueryParameters\022@\n\013query_inp"
-          + "ut\030\003 \001(\0132&.google.cloud.dialogflow.v2.Qu"
-          + "eryInputB\003\340A\002\022J\n\023output_audio_config\030\004 \001"
-          + "(\0132-.google.cloud.dialogflow.v2.OutputAu"
-          + "dioConfig\022<\n\030output_audio_config_mask\030\007 "
-          + "\001(\0132\032.google.protobuf.FieldMask\022\023\n\013input"
-          + "_audio\030\005 \001(\014\"\370\001\n\024DetectIntentResponse\022\023\n"
-          + "\013response_id\030\001 \001(\t\022=\n\014query_result\030\002 \001(\013"
-          + "2\'.google.cloud.dialogflow.v2.QueryResul"
-          + "t\022*\n\016webhook_status\030\003 \001(\0132\022.google.rpc.S"
-          + "tatus\022\024\n\014output_audio\030\004 \001(\014\022J\n\023output_au"
-          + "dio_config\030\006 \001(\0132-.google.cloud.dialogfl"
-          + "ow.v2.OutputAudioConfig\"\215\004\n\017QueryParamet"
-          + "ers\022\021\n\ttime_zone\030\001 \001(\t\022)\n\014geo_location\030\002"
-          + " \001(\0132\023.google.type.LatLng\0225\n\010contexts\030\003 "
-          + "\003(\0132#.google.cloud.dialogflow.v2.Context"
-          + "\022\026\n\016reset_contexts\030\004 \001(\010\022K\n\024session_enti"
-          + "ty_types\030\005 \003(\0132-.google.cloud.dialogflow"
-          + ".v2.SessionEntityType\022(\n\007payload\030\006 \001(\0132\027"
-          + ".google.protobuf.Struct\022e\n!sentiment_ana"
-          + "lysis_request_config\030\n \001(\0132:.google.clou"
-          + "d.dialogflow.v2.SentimentAnalysisRequest"
-          + "Config\022X\n\017webhook_headers\030\016 \003(\0132?.google"
-          + ".cloud.dialogflow.v2.QueryParameters.Web"
-          + "hookHeadersEntry\0325\n\023WebhookHeadersEntry\022"
-          + "\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"\313\001\n\nQuer"
-          + "yInput\022D\n\014audio_config\030\001 \001(\0132,.google.cl"
-          + "oud.dialogflow.v2.InputAudioConfigH\000\0225\n\004"
-          + "text\030\002 \001(\0132%.google.cloud.dialogflow.v2."
-          + "TextInputH\000\0227\n\005event\030\003 \001(\0132&.google.clou"
-          + "d.dialogflow.v2.EventInputH\000B\007\n\005input\"\256\005"
-          + "\n\013QueryResult\022\022\n\nquery_text\030\001 \001(\t\022\025\n\rlan"
-          + "guage_code\030\017 \001(\t\022%\n\035speech_recognition_c"
-          + "onfidence\030\002 \001(\002\022\016\n\006action\030\003 \001(\t\022+\n\nparam"
-          + "eters\030\004 \001(\0132\027.google.protobuf.Struct\022#\n\033"
-          + "all_required_params_present\030\005 \001(\010\022\034\n\024can"
-          + "cels_slot_filling\030\025 \001(\010\022\030\n\020fulfillment_t"
-          + "ext\030\006 \001(\t\022H\n\024fulfillment_messages\030\007 \003(\0132"
-          + "*.google.cloud.dialogflow.v2.Intent.Mess"
-          + "age\022\026\n\016webhook_source\030\010 \001(\t\0220\n\017webhook_p"
-          + "ayload\030\t \001(\0132\027.google.protobuf.Struct\022<\n"
-          + "\017output_contexts\030\n \003(\0132#.google.cloud.di"
-          + "alogflow.v2.Context\0222\n\006intent\030\013 \001(\0132\".go"
-          + "ogle.cloud.dialogflow.v2.Intent\022#\n\033inten"
-          + "t_detection_confidence\030\014 \001(\002\0220\n\017diagnost"
-          + "ic_info\030\016 \001(\0132\027.google.protobuf.Struct\022V"
-          + "\n\031sentiment_analysis_result\030\021 \001(\01323.goog"
-          + "le.cloud.dialogflow.v2.SentimentAnalysis"
-          + "Result\"\234\003\n\034StreamingDetectIntentRequest\022"
-          + ":\n\007session\030\001 \001(\tB)\340A\002\372A#\n!dialogflow.goo"
-          + "gleapis.com/Session\022A\n\014query_params\030\002 \001("
-          + "\0132+.google.cloud.dialogflow.v2.QueryPara"
-          + "meters\022@\n\013query_input\030\003 \001(\0132&.google.clo"
-          + "ud.dialogflow.v2.QueryInputB\003\340A\002\022\034\n\020sing"
-          + "le_utterance\030\004 \001(\010B\002\030\001\022J\n\023output_audio_c"
-          + "onfig\030\005 \001(\0132-.google.cloud.dialogflow.v2"
-          + ".OutputAudioConfig\022<\n\030output_audio_confi"
-          + "g_mask\030\007 \001(\0132\032.google.protobuf.FieldMask"
-          + "\022\023\n\013input_audio\030\006 \001(\014\"\325\002\n\035StreamingDetec"
-          + "tIntentResponse\022\023\n\013response_id\030\001 \001(\t\022R\n\022"
-          + "recognition_result\030\002 \001(\01326.google.cloud."
-          + "dialogflow.v2.StreamingRecognitionResult"
-          + "\022=\n\014query_result\030\003 \001(\0132\'.google.cloud.di"
-          + "alogflow.v2.QueryResult\022*\n\016webhook_statu"
-          + "s\030\004 \001(\0132\022.google.rpc.Status\022\024\n\014output_au"
-          + "dio\030\005 \001(\014\022J\n\023output_audio_config\030\006 \001(\0132-"
-          + ".google.cloud.dialogflow.v2.OutputAudioC"
-          + "onfig\"\235\003\n\032StreamingRecognitionResult\022X\n\014"
-          + "message_type\030\001 \001(\0162B.google.cloud.dialog"
-          + "flow.v2.StreamingRecognitionResult.Messa"
-          + "geType\022\022\n\ntranscript\030\002 \001(\t\022\020\n\010is_final\030\003"
-          + " \001(\010\022\022\n\nconfidence\030\004 \001(\002\022D\n\020speech_word_"
-          + "info\030\007 \003(\0132*.google.cloud.dialogflow.v2."
-          + "SpeechWordInfo\0224\n\021speech_end_offset\030\010 \001("
-          + "\0132\031.google.protobuf.Duration\022\025\n\rlanguage"
-          + "_code\030\n \001(\t\"X\n\013MessageType\022\034\n\030MESSAGE_TY"
-          + "PE_UNSPECIFIED\020\000\022\016\n\nTRANSCRIPT\020\001\022\033\n\027END_"
-          + "OF_SINGLE_UTTERANCE\020\002\":\n\tTextInput\022\021\n\004te"
-          + "xt\030\001 \001(\tB\003\340A\002\022\032\n\rlanguage_code\030\002 \001(\tB\003\340A"
-          + "\002\"h\n\nEventInput\022\021\n\004name\030\001 \001(\tB\003\340A\002\022+\n\npa"
-          + "rameters\030\002 \001(\0132\027.google.protobuf.Struct\022"
-          + "\032\n\rlanguage_code\030\003 \001(\tB\003\340A\002\"F\n\036Sentiment"
-          + "AnalysisRequestConfig\022$\n\034analyze_query_t"
-          + "ext_sentiment\030\001 \001(\010\"^\n\027SentimentAnalysis"
-          + "Result\022C\n\024query_text_sentiment\030\001 \001(\0132%.g"
-          + "oogle.cloud.dialogflow.v2.Sentiment\"-\n\tS"
-          + "entiment\022\r\n\005score\030\001 \001(\002\022\021\n\tmagnitude\030\002 \001"
-          + "(\0022\345\005\n\010Sessions\022\311\003\n\014DetectIntent\022/.googl"
-          + "e.cloud.dialogflow.v2.DetectIntentReques"
-          + "t\0320.google.cloud.dialogflow.v2.DetectInt"
-          + "entResponse\"\325\002\202\323\344\223\002\270\002\"6/v2/{session=proj"
-          + "ects/*/agent/sessions/*}:detectIntent:\001*"
-          + "ZR\"M/v2/{session=projects/*/agent/enviro"
-          + "nments/*/users/*/sessions/*}:detectInten"
-          + "t:\001*ZG\"B/v2/{session=projects/*/location"
-          + "s/*/agent/sessions/*}:detectIntent:\001*Z^\""
-          + "Y/v2/{session=projects/*/locations/*/age"
-          + "nt/environments/*/users/*/sessions/*}:de"
-          + "tectIntent:\001*\332A\023session,query_input\022\222\001\n\025"
-          + "StreamingDetectIntent\0228.google.cloud.dia"
-          + "logflow.v2.StreamingDetectIntentRequest\032"
-          + "9.google.cloud.dialogflow.v2.StreamingDe"
-          + "tectIntentResponse\"\000(\0010\001\032x\312A\031dialogflow."
-          + "googleapis.com\322AYhttps://www.googleapis."
-          + "com/auth/cloud-platform,https://www.goog"
-          + "leapis.com/auth/dialogflowB\360\003\n\036com.googl"
-          + "e.cloud.dialogflow.v2B\014SessionProtoP\001ZDg"
-          + "oogle.golang.org/genproto/googleapis/clo"
-          + "ud/dialogflow/v2;dialogflow\370\001\001\242\002\002DF\252\002\032Go"
-          + "ogle.Cloud.Dialogflow.V2\352A\321\002\n!dialogflow"
-          + ".googleapis.com/Session\022+projects/{proje"
-          + "ct}/agent/sessions/{session}\022Sprojects/{"
-          + "project}/agent/environments/{environment"
-          + "}/users/{user}/sessions/{session}\022@proje"
-          + "cts/{project}/locations/{location}/agent"
-          + "/sessions/{session}\022hprojects/{project}/"
-          + "locations/{location}/agent/environments/"
-          + "{environment}/users/{user}/sessions/{ses"
-          + "sion}b\006proto3"
+          + "/cloud/dialogflow/v2/context.proto\032$goog"
+          + "le/cloud/dialogflow/v2/gcs.proto\032\'google"
+          + "/cloud/dialogflow/v2/intent.proto\0324googl"
+          + "e/cloud/dialogflow/v2/session_entity_typ"
+          + "e.proto\032\036google/protobuf/duration.proto\032"
+          + " google/protobuf/field_mask.proto\032\034googl"
+          + "e/protobuf/struct.proto\032\027google/rpc/stat"
+          + "us.proto\032\030google/type/latlng.proto\"\365\002\n\023D"
+          + "etectIntentRequest\022:\n\007session\030\001 \001(\tB)\340A\002"
+          + "\372A#\n!dialogflow.googleapis.com/Session\022A"
+          + "\n\014query_params\030\002 \001(\0132+.google.cloud.dial"
+          + "ogflow.v2.QueryParameters\022@\n\013query_input"
+          + "\030\003 \001(\0132&.google.cloud.dialogflow.v2.Quer"
+          + "yInputB\003\340A\002\022J\n\023output_audio_config\030\004 \001(\013"
+          + "2-.google.cloud.dialogflow.v2.OutputAudi"
+          + "oConfig\022<\n\030output_audio_config_mask\030\007 \001("
+          + "\0132\032.google.protobuf.FieldMask\022\023\n\013input_a"
+          + "udio\030\005 \001(\014\"\370\001\n\024DetectIntentResponse\022\023\n\013r"
+          + "esponse_id\030\001 \001(\t\022=\n\014query_result\030\002 \001(\0132\'"
+          + ".google.cloud.dialogflow.v2.QueryResult\022"
+          + "*\n\016webhook_status\030\003 \001(\0132\022.google.rpc.Sta"
+          + "tus\022\024\n\014output_audio\030\004 \001(\014\022J\n\023output_audi"
+          + "o_config\030\006 \001(\0132-.google.cloud.dialogflow"
+          + ".v2.OutputAudioConfig\"\215\004\n\017QueryParameter"
+          + "s\022\021\n\ttime_zone\030\001 \001(\t\022)\n\014geo_location\030\002 \001"
+          + "(\0132\023.google.type.LatLng\0225\n\010contexts\030\003 \003("
+          + "\0132#.google.cloud.dialogflow.v2.Context\022\026"
+          + "\n\016reset_contexts\030\004 \001(\010\022K\n\024session_entity"
+          + "_types\030\005 \003(\0132-.google.cloud.dialogflow.v"
+          + "2.SessionEntityType\022(\n\007payload\030\006 \001(\0132\027.g"
+          + "oogle.protobuf.Struct\022e\n!sentiment_analy"
+          + "sis_request_config\030\n \001(\0132:.google.cloud."
+          + "dialogflow.v2.SentimentAnalysisRequestCo"
+          + "nfig\022X\n\017webhook_headers\030\016 \003(\0132?.google.c"
+          + "loud.dialogflow.v2.QueryParameters.Webho"
+          + "okHeadersEntry\0325\n\023WebhookHeadersEntry\022\013\n"
+          + "\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"\313\001\n\nQueryI"
+          + "nput\022D\n\014audio_config\030\001 \001(\0132,.google.clou"
+          + "d.dialogflow.v2.InputAudioConfigH\000\0225\n\004te"
+          + "xt\030\002 \001(\0132%.google.cloud.dialogflow.v2.Te"
+          + "xtInputH\000\0227\n\005event\030\003 \001(\0132&.google.cloud."
+          + "dialogflow.v2.EventInputH\000B\007\n\005input\"\256\005\n\013"
+          + "QueryResult\022\022\n\nquery_text\030\001 \001(\t\022\025\n\rlangu"
+          + "age_code\030\017 \001(\t\022%\n\035speech_recognition_con"
+          + "fidence\030\002 \001(\002\022\016\n\006action\030\003 \001(\t\022+\n\nparamet"
+          + "ers\030\004 \001(\0132\027.google.protobuf.Struct\022#\n\033al"
+          + "l_required_params_present\030\005 \001(\010\022\034\n\024cance"
+          + "ls_slot_filling\030\025 \001(\010\022\030\n\020fulfillment_tex"
+          + "t\030\006 \001(\t\022H\n\024fulfillment_messages\030\007 \003(\0132*."
+          + "google.cloud.dialogflow.v2.Intent.Messag"
+          + "e\022\026\n\016webhook_source\030\010 \001(\t\0220\n\017webhook_pay"
+          + "load\030\t \001(\0132\027.google.protobuf.Struct\022<\n\017o"
+          + "utput_contexts\030\n \003(\0132#.google.cloud.dial"
+          + "ogflow.v2.Context\0222\n\006intent\030\013 \001(\0132\".goog"
+          + "le.cloud.dialogflow.v2.Intent\022#\n\033intent_"
+          + "detection_confidence\030\014 \001(\002\0220\n\017diagnostic"
+          + "_info\030\016 \001(\0132\027.google.protobuf.Struct\022V\n\031"
+          + "sentiment_analysis_result\030\021 \001(\01323.google"
+          + ".cloud.dialogflow.v2.SentimentAnalysisRe"
+          + "sult\"\234\003\n\034StreamingDetectIntentRequest\022:\n"
+          + "\007session\030\001 \001(\tB)\340A\002\372A#\n!dialogflow.googl"
+          + "eapis.com/Session\022A\n\014query_params\030\002 \001(\0132"
+          + "+.google.cloud.dialogflow.v2.QueryParame"
+          + "ters\022@\n\013query_input\030\003 \001(\0132&.google.cloud"
+          + ".dialogflow.v2.QueryInputB\003\340A\002\022\034\n\020single"
+          + "_utterance\030\004 \001(\010B\002\030\001\022J\n\023output_audio_con"
+          + "fig\030\005 \001(\0132-.google.cloud.dialogflow.v2.O"
+          + "utputAudioConfig\022<\n\030output_audio_config_"
+          + "mask\030\007 \001(\0132\032.google.protobuf.FieldMask\022\023"
+          + "\n\013input_audio\030\006 \001(\014\"\325\002\n\035StreamingDetectI"
+          + "ntentResponse\022\023\n\013response_id\030\001 \001(\t\022R\n\022re"
+          + "cognition_result\030\002 \001(\01326.google.cloud.di"
+          + "alogflow.v2.StreamingRecognitionResult\022="
+          + "\n\014query_result\030\003 \001(\0132\'.google.cloud.dial"
+          + "ogflow.v2.QueryResult\022*\n\016webhook_status\030"
+          + "\004 \001(\0132\022.google.rpc.Status\022\024\n\014output_audi"
+          + "o\030\005 \001(\014\022J\n\023output_audio_config\030\006 \001(\0132-.g"
+          + "oogle.cloud.dialogflow.v2.OutputAudioCon"
+          + "fig\"\235\003\n\032StreamingRecognitionResult\022X\n\014me"
+          + "ssage_type\030\001 \001(\0162B.google.cloud.dialogfl"
+          + "ow.v2.StreamingRecognitionResult.Message"
+          + "Type\022\022\n\ntranscript\030\002 \001(\t\022\020\n\010is_final\030\003 \001"
+          + "(\010\022\022\n\nconfidence\030\004 \001(\002\022D\n\020speech_word_in"
+          + "fo\030\007 \003(\0132*.google.cloud.dialogflow.v2.Sp"
+          + "eechWordInfo\0224\n\021speech_end_offset\030\010 \001(\0132"
+          + "\031.google.protobuf.Duration\022\025\n\rlanguage_c"
+          + "ode\030\n \001(\t\"X\n\013MessageType\022\034\n\030MESSAGE_TYPE"
+          + "_UNSPECIFIED\020\000\022\016\n\nTRANSCRIPT\020\001\022\033\n\027END_OF"
+          + "_SINGLE_UTTERANCE\020\002\":\n\tTextInput\022\021\n\004text"
+          + "\030\001 \001(\tB\003\340A\002\022\032\n\rlanguage_code\030\002 \001(\tB\003\340A\002\""
+          + "h\n\nEventInput\022\021\n\004name\030\001 \001(\tB\003\340A\002\022+\n\npara"
+          + "meters\030\002 \001(\0132\027.google.protobuf.Struct\022\032\n"
+          + "\rlanguage_code\030\003 \001(\tB\003\340A\002\"F\n\036SentimentAn"
+          + "alysisRequestConfig\022$\n\034analyze_query_tex"
+          + "t_sentiment\030\001 \001(\010\"^\n\027SentimentAnalysisRe"
+          + "sult\022C\n\024query_text_sentiment\030\001 \001(\0132%.goo"
+          + "gle.cloud.dialogflow.v2.Sentiment\"-\n\tSen"
+          + "timent\022\r\n\005score\030\001 \001(\002\022\021\n\tmagnitude\030\002 \001(\002"
+          + "2\345\005\n\010Sessions\022\311\003\n\014DetectIntent\022/.google."
+          + "cloud.dialogflow.v2.DetectIntentRequest\032"
+          + "0.google.cloud.dialogflow.v2.DetectInten"
+          + "tResponse\"\325\002\202\323\344\223\002\270\002\"6/v2/{session=projec"
+          + "ts/*/agent/sessions/*}:detectIntent:\001*ZR"
+          + "\"M/v2/{session=projects/*/agent/environm"
+          + "ents/*/users/*/sessions/*}:detectIntent:"
+          + "\001*ZG\"B/v2/{session=projects/*/locations/"
+          + "*/agent/sessions/*}:detectIntent:\001*Z^\"Y/"
+          + "v2/{session=projects/*/locations/*/agent"
+          + "/environments/*/users/*/sessions/*}:dete"
+          + "ctIntent:\001*\332A\023session,query_input\022\222\001\n\025St"
+          + "reamingDetectIntent\0228.google.cloud.dialo"
+          + "gflow.v2.StreamingDetectIntentRequest\0329."
+          + "google.cloud.dialogflow.v2.StreamingDete"
+          + "ctIntentResponse\"\000(\0010\001\032x\312A\031dialogflow.go"
+          + "ogleapis.com\322AYhttps://www.googleapis.co"
+          + "m/auth/cloud-platform,https://www.google"
+          + "apis.com/auth/dialogflowB\360\003\n\036com.google."
+          + "cloud.dialogflow.v2B\014SessionProtoP\001ZDgoo"
+          + "gle.golang.org/genproto/googleapis/cloud"
+          + "/dialogflow/v2;dialogflow\370\001\001\242\002\002DF\252\002\032Goog"
+          + "le.Cloud.Dialogflow.V2\352A\321\002\n!dialogflow.g"
+          + "oogleapis.com/Session\022+projects/{project"
+          + "}/agent/sessions/{session}\022Sprojects/{pr"
+          + "oject}/agent/environments/{environment}/"
+          + "users/{user}/sessions/{session}\022@project"
+          + "s/{project}/locations/{location}/agent/s"
+          + "essions/{session}\022hprojects/{project}/lo"
+          + "cations/{location}/agent/environments/{e"
+          + "nvironment}/users/{user}/sessions/{sessi"
+          + "on}b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -238,6 +239,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               com.google.api.ResourceProto.getDescriptor(),
               com.google.cloud.dialogflow.v2.AudioConfigProto.getDescriptor(),
               com.google.cloud.dialogflow.v2.ContextProto.getDescriptor(),
+              com.google.cloud.dialogflow.v2.GcsProto.getDescriptor(),
               com.google.cloud.dialogflow.v2.IntentProto.getDescriptor(),
               com.google.cloud.dialogflow.v2.SessionEntityTypeProto.getDescriptor(),
               com.google.protobuf.DurationProto.getDescriptor(),
@@ -421,6 +423,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
     com.google.api.ResourceProto.getDescriptor();
     com.google.cloud.dialogflow.v2.AudioConfigProto.getDescriptor();
     com.google.cloud.dialogflow.v2.ContextProto.getDescriptor();
+    com.google.cloud.dialogflow.v2.GcsProto.getDescriptor();
     com.google.cloud.dialogflow.v2.IntentProto.getDescriptor();
     com.google.cloud.dialogflow.v2.SessionEntityTypeProto.getDescriptor();
     com.google.protobuf.DurationProto.getDescriptor();
diff --git a/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/audio_config.proto b/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/audio_config.proto
index 129314160..3fcae610e 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/audio_config.proto
+++ b/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/audio_config.proto
@@ -30,36 +30,6 @@ option java_outer_classname = "AudioConfigProto";
 option java_package = "com.google.cloud.dialogflow.v2";
 option objc_class_prefix = "DF";
 
-// Hints for the speech recognizer to help with recognition in a specific
-// conversation state.
-message SpeechContext {
-  // Optional. A list of strings containing words and phrases that the speech
-  // recognizer should recognize with higher likelihood.
-  //
-  // This list can be used to:
-  //
-  // * improve accuracy for words and phrases you expect the user to say,
-  //   e.g. typical commands for your Dialogflow agent
-  // * add additional words to the speech recognizer vocabulary
-  // * ...
-  //
-  // See the [Cloud Speech
-  // documentation](https://cloud.google.com/speech-to-text/quotas) for usage
-  // limits.
-  repeated string phrases = 1;
-
-  // Optional. Boost for this context compared to other contexts:
-  //
-  // * If the boost is positive, Dialogflow will increase the probability that
-  //   the phrases in this context are recognized over similar sounding phrases.
-  // * If the boost is unspecified or non-positive, Dialogflow will not apply
-  //   any boost.
-  //
-  // Dialogflow recommends that you use boosts in the range (0, 20] and that you
-  // find a value that fits your use case with binary search.
-  float boost = 2;
-}
-
 // Audio encoding of the audio content sent in the conversational query request.
 // Refer to the
 // [Cloud Speech API
@@ -109,6 +79,36 @@ enum AudioEncoding {
   AUDIO_ENCODING_SPEEX_WITH_HEADER_BYTE = 7;
 }
 
+// Hints for the speech recognizer to help with recognition in a specific
+// conversation state.
+message SpeechContext {
+  // Optional. A list of strings containing words and phrases that the speech
+  // recognizer should recognize with higher likelihood.
+  //
+  // This list can be used to:
+  //
+  // * improve accuracy for words and phrases you expect the user to say,
+  //   e.g. typical commands for your Dialogflow agent
+  // * add additional words to the speech recognizer vocabulary
+  // * ...
+  //
+  // See the [Cloud Speech
+  // documentation](https://cloud.google.com/speech-to-text/quotas) for usage
+  // limits.
+  repeated string phrases = 1;
+
+  // Optional. Boost for this context compared to other contexts:
+  //
+  // * If the boost is positive, Dialogflow will increase the probability that
+  //   the phrases in this context are recognized over similar sounding phrases.
+  // * If the boost is unspecified or non-positive, Dialogflow will not apply
+  //   any boost.
+  //
+  // Dialogflow recommends that you use boosts in the range (0, 20] and that you
+  // find a value that fits your use case with binary search.
+  float boost = 2;
+}
+
 // Information for a word recognized by the speech recognizer.
 message SpeechWordInfo {
   // The word this info is for.
diff --git a/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/document.proto b/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/document.proto
index 11b9268b2..25a58a438 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/document.proto
+++ b/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/document.proto
@@ -20,6 +20,7 @@ import "google/api/annotations.proto";
 import "google/api/client.proto";
 import "google/api/field_behavior.proto";
 import "google/api/resource.proto";
+import "google/cloud/dialogflow/v2/gcs.proto";
 import "google/longrunning/operations.proto";
 import "google/protobuf/field_mask.proto";
 import "google/protobuf/timestamp.proto";
@@ -183,6 +184,30 @@ service Documents {
       metadata_type: "KnowledgeOperationMetadata"
     };
   }
+
+  // Exports a smart messaging candidate document into the specified
+  // destination.
+  //
+  // This method is a [long-running
+  // operation](https://cloud.google.com/dialogflow/cx/docs/how/long-running-operation).
+  // The returned `Operation` type has the following method-specific fields:
+  //
+  // - `metadata`: [KnowledgeOperationMetadata][google.cloud.dialogflow.v2.KnowledgeOperationMetadata]
+  // - `response`: [Document][google.cloud.dialogflow.v2.Document]
+  rpc ExportDocument(ExportDocumentRequest) returns (google.longrunning.Operation) {
+    option (google.api.http) = {
+      post: "/v2/{name=projects/*/knowledgeBases/*/documents/*}:export"
+      body: "*"
+      additional_bindings {
+        post: "/v2/{name=projects/*/locations/*/knowledgeBases/*/documents/*}:export"
+        body: "*"
+      }
+    };
+    option (google.longrunning.operation_info) = {
+      response_type: "Document"
+      metadata_type: "KnowledgeOperationMetadata"
+    };
+  }
 }
 
 // A knowledge document to be used by a [KnowledgeBase][google.cloud.dialogflow.v2.KnowledgeBase].
@@ -328,6 +353,29 @@ message ListDocumentsRequest {
 
   // The next_page_token value returned from a previous list request.
   string page_token = 3;
+
+  // The filter expression used to filter documents returned by the list method.
+  // The expression has the following syntax:
+  //
+  //   <field> <operator> <value> [AND <field> <operator> <value>] ...
+  //
+  // The following fields and operators are supported:
+  //
+  // * knowledge_types with has(:) operator
+  // * display_name with has(:) operator
+  // * state with equals(=) operator
+  //
+  // Examples:
+  //
+  // * "knowledge_types:FAQ" matches documents with FAQ knowledge type.
+  // * "display_name:customer" matches documents whose display name contains
+  //   "customer".
+  // * "state=ACTIVE" matches documents with ACTIVE state.
+  // * "knowledge_types:FAQ AND state=ACTIVE" matches all active FAQ documents.
+  //
+  // For more information about filtering, see
+  // [API Filtering](https://aip.dev/160).
+  string filter = 4;
 }
 
 // Response message for [Documents.ListDocuments][google.cloud.dialogflow.v2.Documents.ListDocuments].
@@ -403,6 +451,41 @@ message ReloadDocumentRequest {
     // the form `gs://<bucket-name>/<object-name>`.
     string content_uri = 3 [(google.api.field_behavior) = OPTIONAL];
   }
+
+  // Optional. Whether to import custom metadata from Google Cloud Storage.
+  // Only valid when the document source is Google Cloud Storage URI.
+  bool import_gcs_custom_metadata = 4 [(google.api.field_behavior) = OPTIONAL];
+
+  // Optional. When enabled, the reload request is to apply partial update to the smart
+  // messaging allowlist.
+  bool smart_messaging_partial_update = 5 [(google.api.field_behavior) = OPTIONAL];
+}
+
+// Request message for [Documents.ExportDocument][google.cloud.dialogflow.v2.Documents.ExportDocument].
+message ExportDocumentRequest {
+  // Required. The name of the document to export.
+  // Format: `projects/<Project ID>/locations/<Location
+  // ID>/knowledgeBases/<Knowledge Base ID>/documents/<Document ID>`.
+  string name = 1 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = {
+      type: "dialogflow.googleapis.com/Document"
+    }
+  ];
+
+  // Required. The destination for the export.
+  oneof destination {
+    // Cloud Storage file path to export the document.
+    GcsDestination gcs_destination = 2;
+  }
+
+  // When enabled, export the full content of the document including empirical
+  // probability.
+  bool export_full_content = 3;
+
+  // When enabled, export the smart messaging allowlist document for partial
+  // update.
+  bool smart_messaging_partial_update = 5;
 }
 
 // Metadata in google::longrunning::Operation for Knowledge operations.
diff --git a/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/gcs.proto b/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/gcs.proto
index 1fb2dc99c..9d96103e6 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/gcs.proto
+++ b/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/gcs.proto
@@ -26,3 +26,13 @@ option java_multiple_files = true;
 option java_outer_classname = "GcsProto";
 option java_package = "com.google.cloud.dialogflow.v2";
 option objc_class_prefix = "DF";
+
+// Google Cloud Storage location for the output.
+message GcsDestination {
+  // The Google Cloud Storage URIs for the output. A URI is of the
+  // form:
+  //   gs://bucket/object-prefix-or-name
+  // Whether a prefix or name is used depends on the use case. The requesting
+  // user must have "write-permission" to the bucket.
+  string uri = 1;
+}
diff --git a/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/knowledge_base.proto b/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/knowledge_base.proto
index 0b1aa8b3e..14647757e 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/knowledge_base.proto
+++ b/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/knowledge_base.proto
@@ -165,6 +165,34 @@ message ListKnowledgeBasesRequest {
 
   // The next_page_token value returned from a previous list request.
   string page_token = 3;
+
+  // The filter expression used to filter knowledge bases returned by the list
+  // method. The expression has the following syntax:
+  //
+  //   <field> <operator> <value> [AND <field> <operator> <value>] ...
+  //
+  // The following fields and operators are supported:
+  //
+  // * display_name with has(:) operator
+  // * language_code with equals(=) operator
+  //
+  // Examples:
+  //
+  // * 'language_code=en-us' matches knowledge bases with en-us language code.
+  // * 'display_name:articles' matches knowledge bases whose display name
+  //   contains "articles".
+  // * 'display_name:"Best Articles"' matches knowledge bases whose display
+  //   name contains "Best Articles".
+  // * 'language_code=en-gb AND display_name=articles' matches all knowledge
+  //   bases whose display name contains "articles" and whose language code is
+  //   "en-gb".
+  //
+  // Note: An empty filter string (i.e. "") is a no-op and will result in no
+  // filtering.
+  //
+  // For more information about filtering, see
+  // [API Filtering](https://aip.dev/160).
+  string filter = 4;
 }
 
 // Response message for [KnowledgeBases.ListKnowledgeBases][google.cloud.dialogflow.v2.KnowledgeBases.ListKnowledgeBases].
diff --git a/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/participant.proto b/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/participant.proto
index cc67584f9..71bc3a967 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/participant.proto
+++ b/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/participant.proto
@@ -21,6 +21,7 @@ import "google/api/client.proto";
 import "google/api/field_behavior.proto";
 import "google/api/resource.proto";
 import "google/cloud/dialogflow/v2/audio_config.proto";
+import "google/cloud/dialogflow/v2/gcs.proto";
 import "google/cloud/dialogflow/v2/session.proto";
 import "google/protobuf/any.proto";
 import "google/protobuf/duration.proto";
diff --git a/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/session.proto b/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/session.proto
index 7f8332211..6c4bf790b 100644
--- a/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/session.proto
+++ b/proto-google-cloud-dialogflow-v2/src/main/proto/google/cloud/dialogflow/v2/session.proto
@@ -22,6 +22,7 @@ import "google/api/field_behavior.proto";
 import "google/api/resource.proto";
 import "google/cloud/dialogflow/v2/audio_config.proto";
 import "google/cloud/dialogflow/v2/context.proto";
+import "google/cloud/dialogflow/v2/gcs.proto";
 import "google/cloud/dialogflow/v2/intent.proto";
 import "google/cloud/dialogflow/v2/session_entity_type.proto";
 import "google/protobuf/duration.proto";