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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 compaction(self, request_compaction=False):
 """Retrieve a report on, or request compaction for this instance. :param bool request_compaction: A boolean indicating whether or not to request compaction. """

        url = self._service_url + 'compaction/'

        if request_compaction:
            response = requests.post(url, **self._instances._default_request_kwargs)
        else:
            response = requests.get(url, **self._instances._default_request_kwargs)

        return response.json()