ejb3/src/main/java/org/jboss/as/ejb3/timerservice/TimerServiceImpl.java
private Map<String, TimerImpl> getWaitingOnTxCompletionTimers() {
        Map<String, TimerImpl> timers = null;
        if (getTransaction() != null) {
            timers = (Map<String, TimerImpl>) tsr.getResource(waitingOnTxCompletionKey);
        }
        return timers == null ? Collections.<String, TimerImpl>emptyMap() : timers;
    }
private Map<String, TimerImpl> getWaitingOnTxCompletionTimers() {
        Map<String, TimerImpl> timers = null;
        if (getTransaction() != null) {
            timers = (Map<String, TimerImpl>) tsr.getResource(waitingOnTxCompletionKey);
        }
        return timers == null ? Collections.<String, TimerImpl>emptyMap() : timers;
    }
Returns an unmodifiable view of timers in the current transaction that are waiting for the transaction
to finish