if (buf != null) {
                    sitemapUrl.setLoc(buf.toString().trim());
                    buf = null;
                }
            } else if (LASTMOD_ELEMENT.equals(qName)) {
                if (buf != null) {
                    sitemapUrl.setLastmod(buf.toString().trim());
                    buf = null;
                }
            } else if (CHANGEFREQ_ELEMENT.equals(qName)) {

            buf.append(t).append(' ');
            if (buf.length() > maxAnalyzedContentLength) {
                try {
                    tokens.addAll(analyzer.analyze(buf.toString().trim(), field, lang));
                } catch (OpenSearchStatusException | IllegalStateException e) {
                    if (logger.isDebugEnabled()) {

                buf.append("</item>");
            }
        }
        buf.append("</list>");
        // TODO support other type
        // TODO trim(default)
        return "<field name=\"" + XmlUtil.escapeXml(name) + "\">" + buf.toString().trim() + "</field>\n";
    }

    /**
     * Returns the additional data for the response.
     * @param responseData The response data.

                buf.append("</item>");
            }
        }
        buf.append("</list>");
        // TODO support other type
        // TODO trim(default)
        return "<field name=\"" + XmlUtil.escapeXml(name) + "\">" + buf.toString().trim() + "</field>\n";
    }

    /**
     * Returns additional data for the result.
     * @param responseData The response data.

     * @return the normalized URL
     */
    protected String normalizeUrl(final String u) {
        if (u == null) {
            return null;
        }

        // trim
        String url = u.trim();

        int idx = url.indexOf('#');
        if (idx >= 0) {
            url = url.substring(0, idx);
        }

        url = url.replace("/./", "/");

        public List<AnalyzeToken> analyze(String text, String field, String lang) {
            if (text == null || text.trim().isEmpty()) {
                return Collections.emptyList();
            }

            List<AnalyzeToken> tokens = new ArrayList<>();
            String[] words = text.trim().split("[\\s@#$.,!?;:()\\[\\]{}\"']+");

            int position = 0;
            int offset = 0;

     */
    public FesenClient() {
        address = System.getProperty(HTTP_ADDRESS, "localhost:9200").trim();
        final String targets = System.getProperty(TARGET_INDICES);
        if (StringUtil.isNotBlank(targets)) {
            targetIndices = Arrays.stream(targets.split(",")).map(String::trim).toArray(n -> new String[n]);
        }
    }

    /**
     * Sets the address of the OpenSearch instance.

                if (logger.isDebugEnabled()) {
                    logger.debug("Failed to read data.", e);
                }
                return StringUtil.EMPTY;
            }

            return buf.toString().trim();
        }

        private boolean isSpaceChar(final int c) {
            for (final int spaceChar : spaceChars) {
                if (c == spaceChar) {
                    return true;
                }

                final Node node = nodeList.get(i);
                buf.append(node.getTextContent()).append(' ');
            }
            return new ExtractData(buf.toString().replaceAll("\\s+", " ").trim());
        } catch (final Exception e) {
            throw new ExtractException(e);
        }
    }

    /**
     * Gets an XPathAPI instance from the cache for the current thread.
     *

    }

    /**
     * @param command2
     * @param params
     * @return
     */
    List<String> parseCommand(final String command, final Map<String, String> params) {
        final String cmd = command.trim();
        final List<String> cmdList = new ArrayList<>();
        final StringBuilder buf = new StringBuilder(100);
        boolean singleQuote = false;
        boolean doubleQuote = false;
        char prevChar = ' ';