def get_matching_configs(self, template):
        raise NotImplementedError('abstract')
Return a copied version of this tree. This is a shallow copy in 
dataset/ETHPy150Open ardekantur/pyglet/pyglet/canvas/base.py/Screen.get_matching_configs--crossover with--dataset/ETHPy150Open charanpald/APGL/apgl/graph/DictTree.py/DictTree.copy