participants[i] = new MockParticipant(clusterName, instanceName, ZK_ADDR, null);
// add a state model with non-OFFLINE initial state
StateMachineEngine stateMach = participants[i].getManager().getStateMachineEngine();
MockBootstrapModelFactory bootstrapFactory = new MockBootstrapModelFactory();
stateMach.registerStateModelFactory("Bootstrap", bootstrapFactory);
participants[i].syncStart();
}