code: def unpad(self, x):
      ht, wd = x.shape[-2:]
      c = [
          self._pad[2],
          ht - self._pad[3],
          self._pad[0],
          wd - self._pad[1],
      ]
      return x[..., c[0] : c[1], c[2] : c[3]]
  
imports: import torch.nn.functional
label_desc: Use image node_id 3 for calling the InputPadder obj's underlying member method code with example usage: obj.unpad(x) and returns: x