code: func (c *Cast) SetSinkToUse(sinkName string) (*gcdmessage.ChromeResponse, error) {
  	var v CastSetSinkToUseParams
  	v.SinkName = sinkName
  	return c.SetSinkToUseWithParams(&v)
  }
docs: // SetSinkToUse - Sets a sink to be used when the web page requests the browser to choose a sink via Presentation API, Remote Playback API, or Cast SDK.
  // sinkName -