code: def test_forbid_wscale_as_a_keyword_argument(self):
      with self.assertRaises(ValueError):
          links.MLPConvolution2D(
              self.in_channels, self.out_channels, wscale=1
          )
  
imports: import unittest
  import mock
  import numpy
  import chainer
  from chainer.backends import cuda
  from chainer import functions
  from chainer import links
  from chainer import testing
  from chainer.testing import attr
label_desc: Use image node_id 5 for calling the TestInitArgumentForv2 obj's underlying member method code with example usage: obj.test_forbid_wscale_as_a_keyword_argument() without return types