def wait(self):
    apiproxy_stub_map.UserRPC.wait_all(self.__rpcs)
https://developer.riotgames.com/api/methods#!/1034/3544
dataset/ETHPy150Open GoogleCloudPlatform/python-compat-runtime/appengine-compat/exported_appengine_sdk/google/appengine/datastore/datastore_rpc.py/MultiRpc.wait--crossover with--dataset/ETHPy150Open meraki-analytics/cassiopeia/cassiopeia/dto/championmasteryapi.py/get_champion_masteries