code: func (c *Cast) EnableWithParams(v *CastEnableParams) (*gcdmessage.ChromeResponse, error) {
  	return gcdmessage.SendDefaultRequest(c.target, c.target.GetSendCh(), &gcdmessage.ParamRequest{Id: c.target.GetId(), Method: "Cast.enable", Params: v})
  }
docs: // EnableWithParams - Starts observing for sinks that can be used for tab mirroring, and if set, sinks compatible with |presentationUrl| as well. When sinks are found, a |sinksUpdated| event is fired. Also starts observing for issue messages. When an issue is added or removed, an |issueUpdated| event is fired.