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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 migration_exchange(self, *, users: List[str], **kwargs) -> SlackResponse: """For Enterprise Grid workspaces, map local user IDs to global user IDs Args: users (list):
 A list of user ids, up to 400 per request. e.g. ['W1234567890', 'U2345678901', 'U3456789012'] """

        kwargs.update({"users": users})
        return self.api_call("migration.exchange", http_verb="GET", params=kwargs)