def leave_experiment(self, experiment):
        self.clear_session_value(self.session_key(experiment))
Called when a Prepare message is received from a Proposer
dataset/ETHPy150Open dailymuse/oz/oz/bandit/middleware.py/BanditTestingMiddleware.leave_experiment--crossover with--dataset/ETHPy150Open cocagne/paxos/paxos/essential.py/Acceptor.recv_prepare