code: def forward(self, inputs, device):
      (x,) = inputs
      y = functions.get_item(x, self.slices)
      return (y,)
  
imports: import unittest
  import numpy
  import chainer
  from chainer.backends import cuda
  from chainer import functions
  from chainer import gradient_check
  from chainer import testing
  from chainer.testing import attr
label_desc: Use image node_id 3 for calling the TestGetItem obj's underlying member method code with example usage: obj.forward(inputs, device) and returns: y