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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 mpim_open(self, *, users: List[str], **kwargs) -> SlackResponse: """This method opens a multiparty direct message. Args: users (list):
 A lists of user ids. The ordering of the users is preserved whenever a MPIM group is returned. e.g. ['W1234567890', 'U2345678901', 'U3456789012'] """

        kwargs.update({"users": users})
        return self.api_call("mpim.open", json=kwargs)