code: def forward(self, inputs, device):
      x1, x2 = inputs
      y = functions.scale(x1, x2, self.axis)
      return (y,)
  
file_path: chainer/tests/chainer_tests/functions_tests/math_tests/test_scale.py
imports: import unittest
  import numpy
  import chainer
  from chainer import functions
  from chainer import testing
label_desc: Use image node_id 4 for calling the TestScale obj's underlying member method code with example usage: obj.forward(inputs, device) and returns: y