code: def get_home(self, home_id):
          
          if home_id not in self._all_home_ids:
              _LOGGER.error("Could not find any Tibber home with id: %s", home_id)
              return None
          if home_id not in self._homes.keys():
              self._homes[home_id] = TibberHome(home_id, self)
          return self._homes[home_id]
docs: Retun an instance of TibberHome for given home id.