def filter_pypi(self, entry):
        for package in self.packages:
            if entry.title.lower().startswith(package):
                return entry
Lookup the JsonRPC method at call time.
dataset/ETHPy150Open gawel/irc3/examples/freenode_irc3.py/FeedsHook.filter_pypi--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/tools/dev_appserver_apiserver.py/ApiConfigManager.LookupRpcMethod