docs: public void fireEvent(final WorkerEvent event, final Worker worker, final String queue, final Job job, 
              final Object runner, final Object result, final Throwable t) {
          final ConcurrentSet<WorkerListener> listeners = this.eventListenerMap.get(event);
          if (listeners != null) {
              for (final WorkerListener listener : listeners) {
                  if (listener != null) {
                      try {
                          listener.onEvent(event, worker, queue, job, runner, result, t);
                      } catch (Exception e) {
                          log.error("Failure executing listener " + listener + " for event " + event 
                                  + " from queue " + queue + " on worker " + worker, e);
                      }
                  }
              }
          }
      }