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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 usergroups_users_list(self, *, usergroup: str, **kwargs) -> SlackResponse: """List all users in a User Group Args: usergroup (str):
 The encoded ID of the User Group to update. e.g. 'S0604QSJC' """

        self._validate_xoxp_token()
        kwargs.update({"usergroup": usergroup})
        return self.api_call("usergroups.users.list", http_verb="GET", params=kwargs)