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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 token(self, token):
 """Set the oauth token and the current_user :param token: the oauth token :type token: :class:`dict` :returns: None :rtype: None :raises: None """

        self._token = token
        if token:
            self.current_user = self.query_login_user()