code: def _add_segment(self, rec_id, utt_id, start, end):
      self.segments.append(
          "{} {} {:.3f} {:.3f}".format(rec_id, utt_id, start, end)
      )
  
file_path: espnet/egs2/dsing/asr1/local/data_prep.py
imports: import argparse
  import hashlib
  import json
  import re
  from os import listdir, makedirs
  from os.path import exists, isfile, join
label_desc: Use image node_id 3 for calling the DataSet obj's underlying member method code with example usage: obj._add_segment(rec_id, utt_id, start, end) without return types