log(buf);
            }
        });
    }

    /**
     * Marks statistics tracking as complete for the specified crawler object.
     * Decrements the reference count and if it reaches zero, removes the
     * statistics object from cache and outputs the final statistics.
     *
     * @param keyObj the crawler object to complete tracking for
     */
    public void done(final Object keyObj) {

     */
    public void addEventHandler(final String eventName, final Consumer<EventInfo> handler) {
        eventHandlers.computeIfAbsent(eventName, k -> new ArrayList<>()).add(handler);
    }

    /**
     * Fetches new events from OpenSearch that were created after the last check time.
     *
     * @return the list of new events.
     */
    protected List<EventInfo> fetchNewEvents() {