code: def test_clip_intensity(self):
      intensity = audaugs.clip_intensity(
          metadata={}, duration_factor=0.75
      )
      self.assertAlmostEqual(intensity, 25.0)
  
imports: import unittest
  import numpy
  from augly import audio
label_desc: Use image node_id 5 for calling the IntensityAudioUnitTest obj's underlying member method code with example usage: obj.test_clip_intensity() without return types