public com.google.common.util.concurrent.ListenableFuture<
            com.google.cloud.vertexai.api.DirectRawPredictResponse>
        directRawPredict(com.google.cloud.vertexai.api.DirectRawPredictRequest request) {
      return io.grpc.stub.ClientCalls.futureUnaryCall(
          getChannel().newCall(getDirectRawPredictMethod(), getCallOptions()), request);
    }
<pre>
Perform an unary online prediction request to a gRPC model server for
custom containers.
</pre>
java-vertexai/grpc-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/PredictionServiceGrpc.java