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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 CreateChatWith(self, *Usernames):
 """Creates a chat with one or more users. :Parameters: Usernames : str One or more Skypenames of the users. :return: A chat object :rtype: `Chat` :see: `Chat.AddMembers` """

        return Chat(self, chop(self._DoCommand('CHAT CREATE %s' % ', '.join(Usernames)), 2)[1])