class_docstr: Reference : https://github.com/quark0/darts/blob/master/cnn/utils.py
code: def __call__(self, img):
      h, w = img.size(1), img.size(2)
      mask = np.ones((h, w), np.float32)
      y = np.random.randint(h)
      x = np.random.randint(w)
  
      y1 = np.clip(y - self.length // 2, 0, h)
      y2 = np.clip(y + self.length // 2, 0, h)
      x1 = np.clip(x - self.length // 2, 0, w)
      x2 = np.clip(x + self.length // 2, 0, w)
  
      mask[y1:y2, x1:x2] = 0.0
      mask = torch.from_numpy(mask)
      mask = mask.expand_as(img)
      img *= mask
      return img
  
imports: import random
  import numpy
  import PIL
  import PIL.ImageDraw
  import PIL.ImageEnhance
  import PIL.ImageOps
  import torch
  from PIL import Image
label_desc: Use image node_id 2 for calling the CutoutDefault obj's underlying member method code with example usage: obj.__call__(img) and returns: img