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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 _options(self):
 """ Returns a raw options object :rtype: dict """

        if self._options_cache is None:
            target_url = self.client.get_url(self._URL_KEY, 'OPTIONS', 'options')
            r = self.client.request('OPTIONS', target_url)
            self._options_cache = r.json()
        return self._options_cache