code: def test_dynamic_length(self):
      samples = np.zeros((2048,), dtype=np.float32)
      sample_rate = 16000
      augmenter = TimeStretch(
          min_rate=0.8,
          max_rate=0.9,
          leave_length_unchanged=False,
          p=1.0,
      )
  
      samples = augmenter(samples=samples, sample_rate=sample_rate)
  
      assert samples.dtype == np.float32
      assert len(samples) > 2048
  
imports: import numpy
  from audiomentations import TimeStretch
label_desc: Use image node_id 1 for calling the TestTimeStretch obj's underlying member method code with example usage: obj.test_dynamic_length() without return types