code: def check_forward(self, logit_data, x_data):
      distributions.bernoulli._bernoulli_log_prob(logit_data, x_data)
  
imports: import unittest
  import numpy
  from chainer import backend
  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 2 for calling the TestBernoulliLogProb obj's underlying member method code with example usage: obj.check_forward(logit_data, x_data) without return types