class_docstr: Benchmark for noise routines in scikit-image.
code: def _make_salt_and_pepper_noise(self, amount, salt_vs_pepper):
      util.random_noise(
          self.image,
          mode="s&p",
          amount=amount,
          salt_vs_pepper=salt_vs_pepper,
      )
  
imports: import numpy
  from skimage import util
label_desc: Use image node_id 4 for calling the NoiseSuite obj's underlying member method code with example usage: obj._make_salt_and_pepper_noise(amount, salt_vs_pepper) without return types