def add_child(self, child):
        assert isinstance(child, TreeNode)
        if child not in self.children:
            self.children.append(child)
Request an immediate kernel shutdown.
dataset/ETHPy150Open VisTrails/VisTrails/contrib/titan/class_tree.py/TreeNode.add_child--crossover with--dataset/ETHPy150Open ipython/ipython-py3k/IPython/zmq/kernelmanager.py/ShellSocketChannel.shutdown