docs: def gas(self):
          """:return: A gas object modeled as a named tuple"""
          usage = self._state['gasUsage']
          return Usage(usage.get('avgDayValue'),
                       usage.get('avgValue'),
                       usage.get('dayCost'),
                       usage.get('dayUsage'),
                       usage.get('isSmart'),
                       usage.get('meterReading'),
                       usage.get('value'))