code: def _populate_inception_bottlenecks(scope):
    
    graph = tf.get_default_graph()
    for op in graph.get_operations():
      if op.name.startswith(scope+'/') and 'Concat' in op.type:
        name = op.name.split('/')[1]
        pre_relus = []
        for tower in op.inputs[1:]:
          if tower.op.type == 'Relu':
            tower = tower.op.inputs[0]
          pre_relus.append(tower)
        concat_name = scope + '/' + name + '_pre_relu'
        _ = tf.concat(pre_relus, -1, name=concat_name)
docs: Add Inception bottlenecks and their pre-Relu versions to the graph.