DataStoreCrawlingException exception1 = new DataStoreCrawlingException(url, message, ioException);
        assertTrue(exception1.getCause() instanceof java.io.IOException);

        // Test with IllegalArgumentException
        IllegalArgumentException argException = new IllegalArgumentException("Invalid URL format");

            return null;
        } catch (final ChildUrlsException | DataStoreCrawlingException e) {
            throw e;
        } catch (final Exception e) {
            final FessConfig fessConfig = ComponentUtil.getFessConfig();
            final Object configId = dataMap.get(fessConfig.getIndexFieldConfigId());
            throw new DataStoreCrawlingException(url, "Failed to add document. url: " + url + ", configId: " + configId, e);