def get_transaction_prefix_path(self, app_id):
    return PATH_SEPARATOR.join([self.get_app_root_path(app_id), APP_TX_PATH])
Creates a ProtoRPC message class using a subset of the class properties.
dataset/ETHPy150Open AppScale/appscale/AppDB/zkappscale/zktransaction.py/ZKTransaction.get_transaction_prefix_path--crossover with--dataset/ETHPy150Open GoogleDeveloperExperts/experts-app-backend/endpoints_proto_datastore/ndb/model.py/EndpointsModel.ProtoCollection