code: def away(self):
          
          nest = self._last_reading.get('users_away', None)
          ecobee = self.profile()
          if nest is not None:
              return nest
          if ecobee is not None:
              if ecobee == "home":
                  return False
              return True
          return None
docs: This function handles both ecobee and nest thermostats
          which use a different field for away/home status.