getSingleNodeValue(document, getLangXpath(fessConfig, xpathConfigMap), node -> pruneNode(node, crawlingConfig)));
        if (lang != null) {
            putResultDataBody(dataMap, fessConfig.getIndexFieldLang(), lang);
        }
        // title
        // content
        final String body = getSingleNodeValue(document, getContentXpath(fessConfig, xpathConfigMap),

        final Document document = getDocument(data);
        String value = transformer.getSingleNodeValue(document, "//BODY", node -> node);
        assertEquals("aaa", value);

        value = transformer.getSingleNodeValue(document, "//META[@name='keywords']/@content", node -> node);
        assertEquals("bbb", value);

        value = transformer.getSingleNodeValue(document, "//META[@name='keywords']/@content|//BODY", node -> node);