default void annotateVideo(
        com.google.cloud.videointelligence.v1.AnnotateVideoRequest request,
        io.grpc.stub.StreamObserver<com.google.longrunning.Operation> responseObserver) {
      io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall(
          getAnnotateVideoMethod(), responseObserver);
    }
<pre>
Performs asynchronous video annotation. Progress and results can be
retrieved through the `google.longrunning.Operations` interface.
`Operation.metadata` contains `AnnotateVideoProgress` (progress).
`Operation.response` contains `AnnotateVideoResponse` (results).
</pre>
java-video-intelligence/grpc-google-cloud-video-intelligence-v1/src/main/java/com/google/cloud/videointelligence/v1/VideoIntelligenceServiceGrpc.java