def get_application(self, application_id, cb=None):
        self.get(prefix="application-", key=application_id, cb=cb)
Triggers deleted event if the flie doesn't exist.
dataset/ETHPy150Open EricssonResearch/calvin-base/calvin/runtime/north/storage.py/Storage.get_application--crossover with--dataset/ETHPy150Open jeffh/sniffer/sniffer/scanner/base.py/BaseScanner.trigger_deleted