code: def tags(self):
          
          ret = {}
          for typ in _meta_fields_twig:
              if typ in ['uniqueid', 'plugin', 'feedback', 'fitting', 'history', 'twig', 'uniquetwig']:
                  continue
  
              k = '{}s'.format(typ)
              ret[k] = getattr(self, k)
  
          return ret
docs: Returns a dictionary that lists all available tags that can be used
          for further filtering