code: def _build_inner_distribution(self):
      pass
  
imports: import functools
  import itertools
  import operator
  import numpy
  from chainer import distributions
  from chainer import testing
  from chainer.testing import array
  from chainer.testing import attr
  from chainer import utils
label_desc: Use image node_id 1 for calling the TestIndependentNormal obj's underlying member method code with example usage: obj._build_inner_distribution() without return types