code: def forward(self, inputs, device):
      (a,) = inputs
      a = 0.5 * (a + a.T)
      y = F.cholesky(a)
      return (y,)
  
file_path: chainer/tests/chainer_tests/functions_tests/math_tests/test_cholesky.py
imports: import numpy
  import chainer.functions
  from chainer import testing
label_desc: Use image node_id 5 for calling the TestCholesky obj's underlying member method code with example usage: obj.forward(inputs, device) and returns: y