@gen.engine
    def save_async(self, callback):
        from Mojo.ServerHelpers.RunServer import BACKEND_COLLECTION, DATABASE

        if DATABASE:
            if BACKEND_COLLECTION:
                this_collection = BACKEND_COLLECTION(DATABASE, self)
                self.validate()
                ret_obj = yield gen.Task(this_collection.save, self)

                callback(ret_obj)
Starting with a Github repo API URL, generate a stream of master sources.
dataset/ETHPy150Open lonelycode/Mojo/Mojo/ObjectMapper/ModelPrototype.py/Model.save_async--crossover with--dataset/ETHPy150Open openaddresses/machine/openaddr/ci/__init__.py/find_batch_sources