Closes a multiparty direct message channel.

        Args:
            channel (str): Multiparty Direct message channel to close. e.g. 'G1234567890'

def mpim_close(self, *, channel: str, **kwargs) -> SlackResponse:
        """Closes a multiparty direct message channel.

        Args:
            channel (str): Multiparty Direct message channel to close. e.g. 'G1234567890'
        """
        kwargs.update({"channel": channel})
        return self.api_call("mpim.close", json=kwargs)