code: func (m *Streamer) ServeStdout(streamID StreamID, writer io.Writer) {
  	strm, ok := m.loadStream(streamID)
  	if !ok {
  		return
  	}
  	m.serve(writer, strm.stdout, strm.done)
  }
docs: // StreamStdout streams to the specified writer from the standard output channel of the specified pair of channels.