code: def test_serialize_parameters(self):
      transform = AddBackgroundNoise(
          sounds_path=os.path.join(DEMO_DIR, "background_noises"), p=1.0
      )
      samples = np.random.normal(0, 1, size=1024).astype(np.float32)
      transform.randomize_parameters(samples, sample_rate=44100)
      json.dumps(transform.serialize_parameters())
  
file_path: audiomentations/tests/test_add_background_noise.py
imports: import json
  import os
  import pickle
  import random
  import warnings
  import numpy
  import pytest
  from audiomentations import AddBackgroundNoise, Compose, Reverse
  from demo.demo import DEMO_DIR
label_desc: Use image node_id 6 for calling the TestAddBackgroundNoise obj's underlying member method code with example usage: obj.test_serialize_parameters() without return types