code: def scale_grad(x, scale):
      return ScaleGrad(scale=scale)(x)
  
file_path: chainerrl/chainerrl/functions/scale_grad.py
imports: import numpy
  import chainer
  from chainer.utils import type_check
label_desc: Use image node_id 1 for calling a global function with example usage: scale_grad(x, scale) and returns: ScaleGrad