def get_txn_path_before_getting_id(self, app_id):
    return PATH_SEPARATOR.join([self.get_transaction_prefix_path(app_id),
      APP_TX_PREFIX])
Returns a path that callers can use to get new transaction IDs from
dataset/ETHPy150Open AppScale/appscale/AppDB/zkappscale/zktransaction.py/ZKTransaction.get_txn_path_before_getting_id