code: def __call__(self, img, target):
      if random.random() < self.p:
          return hflip(img, target)
      return img, target
  
imports: import random
  import PIL
  import torch
  import torchvision.transforms
  import torchvision.transforms.functional
  from util.box_ops import box_xyxy_to_cxcywh
  from util.misc import interpolate
label_desc: Use image node_id 2 for calling the RandomHorizontalFlip obj's underlying member method code with example usage: obj.__call__(img, target) and returns: img,  target, hflip