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Problem you have encountered: Currently, Vertex only returns the prediction json object as per [1] and other instances provided in the request is not showed in the prediction response.

What you expected to happen: Users should be able to return their specified fields output of the prediction in the response.

Other information (workarounds you have tried, documentation consulted, etc):

[1]: https://cloud.google.com/vertex-ai/docs/reference/rest/v1/PredictResponse