code: def forward_expected(self, inputs):
      (x,) = inputs
      return tuple(
          force_array(x.take(i, axis=self.axis))
          for i in range(self.shape[self.axis])
      )
  
file_path: chainer/tests/chainer_tests/functions_tests/array_tests/test_separate.py
imports: import numpy
  from chainer import functions
  from chainer import testing
  from chainer.utils import force_array
label_desc: Use image node_id 4 for calling the TestSeparate obj's underlying member method code with example usage: obj.forward_expected(inputs) and returns: tuple