code: def test_rnn_tanh_gpu(self):
      self._test_non_lstm(gpu=0, name="NStepRNNTanh")
  
imports: import unittest
  from chainer import links
  from chainer import testing
  import numpy
  from chainerrl.links import stateless_recurrent
label_desc: Use image node_id 9 for calling the TestCallRecurrentLink obj's underlying member method code with example usage: obj.test_rnn_tanh_gpu() without return types