class_docstr: parse ernie config
docstr: :param key:
  :return:
docstr_tok: [":","param","key",":",":","return",":"]
code: def has(self, key):
      """
      :param key:
      :return:
      """
      if key in self._config_dict:
          return True
      return False
  
file_path: PaddleHub/modules/text/sentiment_analysis/ernie_skep_sentiment_analysis/model/ernie.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  import json
  import logging
  import six
label_desc: Use image node_id 4 for calling the ErnieConfig obj's underlying member method code with example usage: obj.has(key) and returns: False, True