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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def emotes(self, emotes):
 """Set the emotes :param emotes: the key of the emotes tag :type emotes: :class:`str` :returns: None :rtype: None :raises: None """

        if emotes is None:
            self._emotes = []
            return
        es = []
        for estr in emotes.split('/'):
            es.append(Emote.from_str(estr))
        self._emotes = es