public final OperationFuture<Empty, OperationMetadata> deleteDraftAsync(
      DeleteDraftRequest request) {
    return deleteDraftOperationCallable().futureCall(request);
  }
Deletes a single Draft.

<p>Sample code:

<pre>{@code
// This snippet has been automatically generated and should be regarded as a code template only.
// It will require modifications to work:
// - It may require correct/in-range values for request initialization.
// - It may require specifying regional endpoints when creating the service client as shown in
// https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
try (AppPlatformClient appPlatformClient = AppPlatformClient.create()) {
  DeleteDraftRequest request =
      DeleteDraftRequest.newBuilder()
          .setName(
              DraftName.of("[PROJECT]", "[LOCATION]", "[APPLICATION]", "[DRAFT]").toString())
          .setRequestId("requestId693933066")
          .build();
  appPlatformClient.deleteDraftAsync(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
java-visionai/google-cloud-visionai/src/main/java/com/google/cloud/visionai/v1/AppPlatformClient.java