How to use the darts.utils.Cutout function in darts

def _data_transforms_cifar10(args):
  CIFAR_MEAN = [0.49139968, 0.48215827, 0.44653124]
  CIFAR_STD = [0.24703233, 0.24348505, 0.26158768]

  train_transform = transforms.Compose([
    transforms.RandomCrop(32, padding=4),
    transforms.RandomHorizontalFlip(),
    transforms.ToTensor(),
    transforms.Normalize(CIFAR_MEAN, CIFAR_STD),
  ])
  if args.cutout:
    train_transform.transforms.append(Cutout(args.cutout_length))

  valid_transform = transforms.Compose([
    transforms.ToTensor(),
    transforms.Normalize(CIFAR_MEAN, CIFAR_STD),
    ])
  return train_transform, valid_transform