code: @BetaApi(
        "The surface for long-running operations is not stable yet and may change in the future.")
    public final OperationFuture<BatchUpdateEntityTypesResponse, Struct> batchUpdateEntityTypesAsync(
        BatchUpdateEntityTypesRequest request) {
      return batchUpdateEntityTypesOperationCallable().futureCall(request);
    }
docs: Updates/Creates multiple entity types in the specified agent.
  
  <p>Operation &lt;response:
  [BatchUpdateEntityTypesResponse][google.cloud.dialogflow.v2.BatchUpdateEntityTypesResponse]&gt;
  
  <p>Sample code:
  
  <pre><code>
  try (EntityTypesClient entityTypesClient = EntityTypesClient.create()) {
  ProjectAgentName parent = ProjectAgentName.of("[PROJECT]");
  BatchUpdateEntityTypesRequest request = BatchUpdateEntityTypesRequest.newBuilder()
  .setParent(parent.toString())
  .build();
  BatchUpdateEntityTypesResponse response = entityTypesClient.batchUpdateEntityTypesAsync(request).get();
  }
  </code></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