code: def is_soundbar(self):
          
          if self._is_soundbar is None:
              if not self.speaker_info:
                  self.get_speaker_info()
  
              model_name = self.speaker_info['model_name'].lower()
              self._is_soundbar = any(model_name.endswith(s) for s in SOUNDBARS)
  
          return self._is_soundbar
docs: bool: Is this zone a soundbar (i.e. has night mode etc.)?