code: def write_data_files(cls, dpext, out_path, d_vocab, d_label_answer):
      pass
  
imports: from typing import Optional
  import gzip
  import os
  from parlai.core.build_data import DownloadableFile
  from parlai.utils.io import PathManager
  import parlai.core.build_data
label_desc: Use image node_id 7 for calling the ParseInsuranceQA obj's underlying member method code with example usage: obj.write_data_files(cls, dpext, out_path, d_vocab, d_label_answer) without return types