code: def get_app_model_voice(self, app_model_item):
          
          if app_model_item.get('name', None) is None:
              raise ImproperlyConfigured('Model menu voices must have a name key') # noqa
  
          if app_model_item.get('app', None) is None:
              raise ImproperlyConfigured('Model menu voices must have an app key') # noqa
  
          return self.get_model_voice(app_model_item.get('app'), app_model_item)
docs: App Model voice
              Returns the js menu compatible voice dict if the user
              can see it, None otherwise