public com.google.common.util.concurrent.ListenableFuture<com.google.longrunning.Operation>
        updateIndex(com.google.cloud.visionai.v1.UpdateIndexRequest request) {
      return io.grpc.stub.ClientCalls.futureUnaryCall(
          getChannel().newCall(getUpdateIndexMethod(), getCallOptions()), request);
    }
<pre>
Updates an Index under the corpus.
Users can perform a metadata-only update or trigger a full index rebuild
with different update_mask values.
</pre>
java-visionai/grpc-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/WarehouseGrpc.java