@crochet.wait_for(timeout=180.0)
    @defer.inlineCallbacks
    def submit(self, mangle=False):
        yield self.async_submit(mangle=mangle)
Store to entity, deleting dynamic properties that no longer exist.
dataset/ETHPy150Open roglew/pappy-proxy/pappyproxy/http.py/Request.submit--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/ext/db/__init__.py/Expando._to_entity