code: def test_sample_cpu(self):
      self.check_sample(False)
  
imports: import numpy
  from chainer.backends import cuda
  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 7 for calling the TestCauchy obj's underlying member method code with example usage: obj.test_sample_cpu() without return types