ConvertMetaToProtobuf converts metadata map to protobuf map.

DownloadEngine downloads the engine for the given options.

ReadEngineOutput reads the output from the engine, since grpc plugins don't have common type, use lambda function to read bytes from the stream.

Run executes the given command with the experimental engine.

Shutdown shuts down the experimental engine.

WithEngineValues add to context default values for engine.

OutputLine represents the output from the engine.