* @param searchEngineClient the search engine client to use for deletion
     * @param url the URL to match for document deletion
     * @return the number of documents that were deleted
     */
    public long deleteDocumentByUrl(final SearchEngineClient searchEngineClient, final String url) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

        final IndexingHelper indexingHelper = ComponentUtil.getIndexingHelper();
        for (final String url : deleteUrlList) {
            indexingHelper.deleteDocumentByUrl(searchEngineClient, url);
        }
        if (logger.isDebugEnabled()) {
            logger.debug("Deleted {} documents from URL list", deleteUrlList.size());
        }
        deleteUrlList.clear();
    }

                return 0;
            }
        };
        ComponentUtil.register(client, "searchEngineClient");

        final String url = "http://test.com/";

        assertEquals(1, indexingHelper.deleteDocumentByUrl(client, url));
        assertEquals("fess.update", resultMap.get("index"));
        assertEquals(url, resultMap.get("url"));
    }

    @Test
    public void test_deleteDocumentsByDocId() {