class_docstr: Abstract class for bridge tests
class_docstr_tok: ["Abstract","class","for","bridge","tests"]
docstr: Runs the bridge with the given arguments
      
docstr_tok: ["Runs","the","bridge","with","the","given","arguments"]
code: def _run(self, scope=None, **kwargs):
      """Runs the bridge with the given arguments"""
  
      with tf.variable_scope(scope or "bridge"):
          bridge = self._create_bridge(**kwargs)
          initial_state = bridge()
  
      with self.test_session() as sess:
          sess.run(tf.global_variables_initializer())
          initial_state_ = sess.run(initial_state)
  
      return initial_state_
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  from collections import namedtuple
  import numpy
  import tensorflow
  from tensorflow.python.util import nest
  from seq2seq.encoders.encoder import EncoderOutput
  from seq2seq.models.bridges import ZeroBridge, InitialStateBridge
  from seq2seq.models.bridges import PassThroughBridge
label_desc: Use image node_id 4 for calling the BridgeTest obj's underlying member method code with example usage: obj._run(scope) and returns: initial_state_