code: def forward(self, inputs, device):
      (x,) = inputs
      return (functions.log_softmax(x, axis=self.axis),)
  
file_path: chainer/tests/chainer_tests/functions_tests/activation_tests/test_log_softmax.py
imports: import unittest
  import numpy
  import chainer
  from chainer.backends import cuda
  from chainer import functions
  from chainer import testing
  from chainer.testing import attr
label_desc: Use image node_id 3 for calling the TestLogSoftmax obj's underlying member method code with example usage: obj.forward(inputs, device) and returns: functions