code: def testBidirectionalRNN(self):
      # Generate 2^3 option values
      # from [True, True, True] to [False, False, False]
      options = itertools.product([True, False], repeat=3)
      for option in options:
          self._testStackBidirectionalDynamicRNN(
              use_gpu=option[0],
              use_shape=option[1],
              use_state_tuple=option[2],
          )
      # Check States.
      self._testStackBidirectionalDynamicRNNStates(use_gpu=False)
      self._testStackBidirectionalDynamicRNNStates(use_gpu=True)
  
imports: import itertools
  from absl.testing import parameterized
  from magenta.contrib import rnn
  import numpy
  import tensorflow.compat.v1
label_desc: Use image node_id 5 for calling the StackBidirectionalRNNTest obj's underlying member method code with example usage: obj.testBidirectionalRNN() without return types