code: def pair(self):
  		
  		address = str(self.__address) if self.__address is not None else ''
  		port = int(self.__port) if self.__port is not None else 0
  		return address, port
docs: Return tuple (address, port), where address is a string (empty string if self.address() is None) and
  		port is an integer (zero if self.port() is None). Mainly, this tuple is used with python socket module
  		(like in bind method)
  
  		:return: 2 value tuple of str and int.