code: def description(tag):
          
          tag_object = Tag(tag)
          results = []
          results.extend(tag_object.descriptions)
          subtags = tag_object.subtags
          for subtag in subtags:
              results += subtag.description
  
          return results
docs: Gets a list of descriptions given the tag.
  
          :param str tag: (hyphen-separated) tag.
          :return: list of string descriptions. The return list can be empty.