}
        }

        @Override
        protected void delayAfterProcessing() {
            afterProcessingCount++;
            if (shouldThrowException) {
                throw new RuntimeException("Test exception in delayAfterProcessing");
            }
        }

        @Override
        protected void delayAtNoUrlInQueue() {
            noUrlInQueueCount++;

    }

    /**
     * Test delayAfterProcessing with zero delay
     */
    public void test_delayAfterProcessing_zeroDelay() {
        final DefaultIntervalController controller = new DefaultIntervalController();
        controller.setDelayMillisAfterProcessing(0L);

        final long start = System.nanoTime();
        controller.delayAfterProcessing();

 * </p>
 * <ul>
 *   <li>Before processing a URL ({@link #delayBeforeProcessing()})</li>
 *   <li>After processing a URL ({@link #delayAfterProcessing()})</li>
 *   <li>When there are no URLs in the queue ({@link #delayAtNoUrlInQueue()})</li>
 *   <li>While waiting for new URLs to be added to the queue ({@link #delayForWaitingNewUrl()})</li>
 * </ul>
 *
 * <p>

        final Long value = params.get(key);
        return value != null ? value : defaultValue;
    }

    /**
     * Delays after processing a URL.
     */
    @Override
    protected void delayAfterProcessing() {
        if (delayMillisAfterProcessing > 0) {
            ThreadUtil.sleep(delayMillisAfterProcessing);
        }
    }

    /**
     * Delays when no URL is in the queue.
     */
    @Override