code: def _convert_csv_data_to_raw_data(self):
      self.raw[
          ["wav_filename", "wav_filesize", "transcript"]
      ] = self.csv_data[
          ["audio_url", "transcript", "audio_length"]
      ].swifter.apply(
          func=lambda arg: self._convert_csv_data_to_raw_data_impl(
              *arg
          ),
          axis=1,
          raw=True,
      )
      self.raw.reset_index()
  
imports: import csv
  import logging
  import math
  import os
  import subprocess
  import urllib
  from pathlib import Path
  import pandas
  from sox import Transformer
  import swifter
  from deepspeech_training.util.importers import get_importers_parser, get_validate_label
label_desc: Use image node_id 3 for calling the GramVaaniDataSets obj's underlying member method code with example usage: obj._convert_csv_data_to_raw_data() without return types