def has_rule(self, rule_path):
    return rule_path in self.rule_nodes
Setup the node server.  All node servers must override this method and 
dataset/ETHPy150Open google/anvil-build/anvil/graph.py/RuleGraph.has_rule--crossover with--dataset/ETHPy150Open UniversalDevicesInc/Polyglot/polyglot/nodeserver_api.py/NodeServer.setup