Streaming Data or Files Through a Service

[linktech1]

Looking to stream large Json payloads and/or files through a Rest service from a Rest client and not read the entire response into memory. I know there is documentation on using a Multi but that seems to be for receiving separate event responses and not a single response. One developer tried to simply return the Response object from external service directly from a service which I don't think is really supported and there are headers you might not want to return. What would be the response content types that could be streamed?