public SimpleScheduleExec cloneForImmediateExecution() {
        final Instant now = Instant.now();
        LOGGER.debug("cloneWithImmediateExecution() - now: {}, lastExecute: {}, nextExecute: {}",
                now, lastExecute, nextExecute);
        return new SimpleScheduleExec(trigger, now, true);
    }
Set the nextExecute time to now, so that the next time execute() is called for this job, it will
return true and thus run.
stroom-util/src/main/java/stroom/util/scheduler/SimpleScheduleExec.java