code: def flip_image(img):
      if img.dim() != 4:
          raise AssertionError
      with torch.cuda.device_of(img):
          idx = (
              torch.arange(img.size(3) - 1, -1, -1).type_as(img).long()
          )
      return img.index_select(3, idx)
  
file_path: pywick/pywick/models/segmentation/testnets/tkcnet/base.py
imports: import numpy
  import torch
  import torch.nn
  import torch.nn.functional
  from .resnet import *
label_desc: Use image node_id 5 for calling a global function with example usage: flip_image(img) and returns: img