code: func (c *Config) StdoutPipe() io.ReadCloser {
  	bytesPipe := ioutils.NewBytesPipe()
  	c.stdout.Add(bytesPipe)
  	return bytesPipe
  }
docs: // StdoutPipe creates a new io.ReadCloser with an empty bytes pipe.
  // It adds this new out pipe to the Stdout broadcaster.
  // This will block stdout if unconsumed.