docstr: Randomly time stretch the given sample.
docstr_tok: ["Randomly","time","stretch","the","given","sample","."]
code: def random_time_stretch(self, sample: Dict) -> Dict:
      """Randomly time stretch the given sample."""
      return dict(
          sample,
          **sync_apply(
              {
                  f"{instrument}_spectrogram": sample[
                      f"{instrument}_spectrogram"
                  ]
                  for instrument in self._instruments
              },
              lambda x: random_time_stretch(
                  x, factor_min=0.9, factor_max=1.1
              ),
          ),
      )
  
imports: import os
  import time
  from os.path import exists
  from os.path import sep
  from typing import Any, Dict, List, Optional, Tuple
  import tensorflow
  from .audio.adapter import AudioAdapter
  from .audio.convertor import db_uint_spectrogram_to_gain, spectrogram_to_db_uint
  from .audio.spectrogram import compute_spectrogram_tf, random_pitch_shift, random_time_stretch
  from .utils.logging import logger
  from .utils.tensor import check_tensor_shape, dataset_from_csv, set_tensor_shape, sync_apply
label_desc: Use image node_id 9 for calling the DatasetBuilder obj's underlying member method code with example usage: obj.random_time_stretch(sample) and returns: dict