code: def test_Compose2(self):
      random_generator = np.random.default_rng(1)
      self.evaluate_class(
          audaugs.Compose(
              [
                  audaugs.InsertInBackground(
                      offset_factor=0.2,
                      background_audio=None,
                      seed=random_generator,
                  ),
                  audaugs.Clip(offset_factor=0.5, duration_factor=0.25),
                  audaugs.Speed(factor=4.0),
              ]
          ),
          fname="compose2",
      )
  
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 8 for calling the TransformsAudioUnitTest obj's underlying member method code with example usage: obj.test_Compose2() without return types