def save(self, doc):
        if doc.id:
            return self.update(doc)
        else:
            return self.insert(doc)
def __init__(self, root, cwd, badfn=None, rules=[]):
        super(treematcher, self).__init__(root, cwd, badfn)
        rules = list(rules)
        self._matcher = pathmatcher.treematcher(rules)
        self._rules = rules