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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_settings(self):
 """Get global mobility domain from DCNM."""

        url = self._global_settings_url
        payload = {}
        res = self._send_request('GET', url, payload, 'settings')
        if res and res.status_code in self._resp_ok:
            return res.json()