code: def test_OneOf(self):
      random.seed(1)
      self.evaluate_class(
          audaugs.OneOf(
              [
                  audaugs.PitchShift(n_steps=4),
                  audaugs.TimeStretch(rate=1.5),
              ]
          ),
          fname="time_stretch",
      )
  
imports: import json
  import random
  import unittest
  import numpy
  from augly import audio
  from augly.tests.audio_tests.base_unit_test import BaseAudioUnitTest
  from augly.utils import AUDIO_METADATA_PATH
label_desc: Use image node_id 16 for calling the TransformsAudioUnitTest obj's underlying member method code with example usage: obj.test_OneOf() without return types