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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_update( self, *, usergroup: str, users: List[str], **kwargs ) -> SlackResponse: """Update the list of users for a User Group Args: usergroup (str):
 The encoded ID of the User Group to update. e.g. 'S0604QSJC' users (list):
 A list user IDs that represent the entire list of users for the User Group. e.g. ['U060R4BJ4', 'U060RNRCZ'] """

        self._validate_xoxp_token()
        kwargs.update({"usergroup": usergroup, "users": users})
        return self.api_call("usergroups.users.update", json=kwargs)