code: def test_call_gpu(self):
      self._test_call(gpu=0)
  
imports: import chainer.functions
  from chainer import testing
  from chainer.testing import attr
  import basetest_state_action_q_function
  import chainerrl
label_desc: Use image node_id 3 for calling the TestFCLSTMSAQFunction obj's underlying member method code with example usage: obj.test_call_gpu() without return types