code: def test_sample_gpu(self):
      self.check_sample(True)
  
imports: import functools
  import unittest
  import numpy
  import chainer
  from chainer.backends import cuda
  from chainer.testing import array
  from chainer.testing import attr
  from chainer import utils
label_desc: Use image node_id 35 for calling the distribution_unittest obj's underlying member method code with example usage: obj.test_sample_gpu() without return types