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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 get_productivity_stats(self, api_token, **kwargs):
 """Return a user's productivity stats. :param api_token: The user's login api_token. :type api_token: str :return: The HTTP response to the request. :rtype: :class:`requests.Response` """

        params = {
            'token': api_token
        }
        return self._get('get_productivity_stats', params, **kwargs)