code: def test_set_state_gpu(self):
      with testing.assert_warns(DeprecationWarning):
          self.link.to_gpu()
      self.check_set_state(self.c, self.h)
  
imports: import unittest
  import numpy
  import chainer
  from chainer import backend
  from chainer.backends import cuda
  from chainer import functions
  from chainer import links
  from chainer import testing
  from chainer.testing import attr
label_desc: Use image node_id 7 for calling the TestLSTMState obj's underlying member method code with example usage: obj.test_set_state_gpu() without return types