code: def on_label_words_set(self):
      super().on_label_words_set()
      self.label_words = self.add_prefix(self.label_words, self.prefix)
  
      # TODO should Verbalizer base class has label_words property and setter?
      # it don't have label_words init argument or label words from_file option at all
  
      self.generate_parameters()
  
imports: import paddle
  from abc import abstractmethod
  from typing import *
  import numpy
  import paddle.nn.functional
label_desc: Use image node_id 2 for calling the ErnieManualVerbalizer obj's underlying member method code with example usage: obj.on_label_words_set() without return types