code: def _is_valid_raw_transcripts(self):
      return pd.Series(
          [bool(transcript) for transcript in self.raw.transcript]
      )
  
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 6 for calling the GramVaaniDataSets obj's underlying member method code with example usage: obj._is_valid_raw_transcripts() and returns: pd