def estimate_size(self, searcher):
        raise NotImplementedError
Serialize this Element and all children to a string.
dataset/ETHPy150Open tallstreet/Whoosh-AppEngine/src/whoosh/query.py/Query.estimate_size--crossover with--dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/words/xish/domish.py/Element.toXml