public static ImageAnnotatorFutureStub newFutureStub(io.grpc.Channel channel) {
    io.grpc.stub.AbstractStub.StubFactory<ImageAnnotatorFutureStub> factory =
        new io.grpc.stub.AbstractStub.StubFactory<ImageAnnotatorFutureStub>() {
          @java.lang.Override
          public ImageAnnotatorFutureStub newStub(
              io.grpc.Channel channel, io.grpc.CallOptions callOptions) {
            return new ImageAnnotatorFutureStub(channel, callOptions);
          }
        };
    return ImageAnnotatorFutureStub.newStub(factory, channel);
  }
Creates a new ListenableFuture-style stub that supports unary calls on the service
java-vision/grpc-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/ImageAnnotatorGrpc.java