code: def get_max_num_token(self):
      return 500
  
file_path: nlpaug/nlpaug/model/lang_models/xlnet.py
imports: import logging
  from nlpaug.model.lang_models import LanguageModels
  from nlpaug.util.selection.filtering import *
label_desc: Use image node_id 5 for calling the XlNet obj's underlying member method code with example usage: obj.get_max_num_token() and returns: int