code: def setUp(self):
      self.x = numpy.random.uniform(0.1, 1, size=self.shape).astype(
          self.dtype
      )
      self.zero_x = numpy.zeros(shape=self.shape).astype(self.dtype)
      self.gy = numpy.random.normal(size=self.shape).astype(self.dtype)
      self.ggx = numpy.random.normal(size=self.shape).astype(self.dtype)
      self.backward_options = {"atol": 1e-2, "rtol": 1e-2, "eps": 1e-5}
  
imports: import unittest
  import numpy
  import chainer
  from chainer.backends import cuda
  from chainer import distributions
  from chainer import gradient_check
  from chainer import testing
  from chainer.testing import attr
label_desc: Use image node_id 1 for calling the TestModifiedXLogX obj's underlying member method code with example usage: obj.setUp() without return types