public Retransmitter(Address sender, RetransmitCommand cmd) { init(sender, cmd, new TimeScheduler(SUSPEND_TIMEOUT), true);
public Retransmitter(Address sender, RetransmitCommand cmd, TimeScheduler sched) { init(sender, cmd, sched, false);
    public Retransmitter(Address sender, RetransmitCommand cmd) {        init(sender, cmd, new TimeScheduler(SUSPEND_TIMEOUT), true);    }