def async_delete(self, callback, key):
        self._schedule(self.store_delete_async, key=key,
                       callback=callback)
:param username: The username to log in with.
dataset/ETHPy150Open kivy/kivy/kivy/storage/__init__.py/AbstractStore.async_delete--crossover with--dataset/ETHPy150Open IvanMalison/okcupyd/okcupyd/user.py/User.from_credentials