code: def forward(self, inp):
      return (inp - self.shift) / self.scale
  
imports: from collections import namedtuple
  import torch
  import torch.nn
  from torchvision import models
  from ..util import get_ckpt_path
label_desc: Use image node_id 2 for calling the ScalingLayer obj's underlying member method code with example usage: obj.forward(inp) and returns: unknown