code: func (conn *Conn) Mode(t string, modestring ...string) {
  	mode := strings.Join(modestring, " ")
  	if mode != "" {
  		mode = " " + mode
  	}
  	conn.Raw(MODE + " " + t + mode)
  }
docs: // Mode sends a MODE command for a target nick or channel t.
  // If no mode strings are provided this requests that a 324 response is sent
  // by the server for the target. Otherwise the mode strings are concatenated
  // with spaces and sent to the server. This allows e.g.
  //     conn.Mode("#channel", "+nsk", "mykey")
  //
  //     MODE t
  //     MODE t modestring