code: func (sc *SocketConnection) ExecuteHangup(uuid string, args string, sync bool) (m *Message, err error) {
  	if uuid != "" {
  		return sc.ExecuteUUID(uuid, "hangup", args, sync)
  	}
  
  	return sc.Execute("hangup", args, sync)
  }
docs: // ExecuteHangup - Helper desgned to help with executing Hangup against active ESL session