text: from watchmen.space.storage.space_storage import get_space_by_id
  from watchmen.topic.storage.topic_schema_storage import get_topic_list_by_ids
  
  
  def load_topic_list_by_space_id(space_id, current_user):
      space = get_space_by_id(space_id, current_user)
      if space.topicIds:
          return []
      else:
          return get_topic_list_by_ids(space.topicIds, current_user)
  