code: def tag_wordnet(self, **kwargs):
          
          global wordnet_tagger
          if wordnet_tagger is None: # cached wn tagger
              wordnet_tagger = WordnetTagger()
          self.__wordnet_tagger = wordnet_tagger
          if len(kwargs) > 0:
              return self.__wordnet_tagger.tag_text(self, **kwargs)
          return self.__wordnet_tagger.tag_text(self, **self.__kwargs)
docs: Create wordnet attribute in ``words`` layer.
  
          See :py:meth:`~estnltk.text.wordnet_tagger.WordnetTagger.tag_text` method
          for applicable keyword arguments.