default void rawPredict(
        com.google.cloud.vertexai.api.RawPredictRequest request,
        io.grpc.stub.StreamObserver<com.google.api.HttpBody> responseObserver) {
      io.grpc.stub.ServerCalls.asyncUnimplementedUnaryCall(getRawPredictMethod(), responseObserver);
    }
<pre>
Perform an online prediction with an arbitrary HTTP payload.
The response includes the following HTTP headers:
* `X-Vertex-AI-Endpoint-Id`: ID of the
[Endpoint][google.cloud.aiplatform.v1.Endpoint] that served this
prediction.
* `X-Vertex-AI-Deployed-Model-Id`: ID of the Endpoint's
[DeployedModel][google.cloud.aiplatform.v1.DeployedModel] that served this
prediction.
</pre>
java-vertexai/grpc-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/PredictionServiceGrpc.java