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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 _on_stackexchange_user(self, future, access_token, response):
 """Invoked as a callback when self.stackexchange_request returns the response to the request for user data. :param method future: The callback method to pass along :param str access_token: The access token for the user's use :param dict response: The HTTP response already decoded """

        response['access_token'] = access_token
        future.set_result(response)