public com.google.cloud.vertexai.api.DirectRawPredictResponse directRawPredict(
        com.google.cloud.vertexai.api.DirectRawPredictRequest request) {
      return io.grpc.stub.ClientCalls.blockingUnaryCall(
          getChannel(), 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