code: def build(cls, dpath):
      print("building version: %s" % cls.version)
  
      # the root of dataset
      dpext = os.path.join(dpath, "insuranceQA-master/%s" % cls.version)
  
      # read vocab file
      vocab_path = os.path.join(dpext, "vocabulary")
      d_vocab = cls.read_vocab(vocab_path)
  
      # read label2answer file
      label2answer_path_gz = os.path.join(dpext, cls.label2answer_fname)
      d_label_answer = cls.read_label2answer(
          label2answer_path_gz, d_vocab
      )
  
      # Create out path
      out_path = os.path.join(dpath, cls.version)
      build_data.make_dir(out_path)
  
      # Parse and write data files
      cls.write_data_files(dpext, out_path, d_vocab, d_label_answer)
  
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 8 for calling the ParseInsuranceQA obj's underlying member method code with example usage: obj.build(cls, dpath) without return types