}

    private Document getDocument(final String data) throws Exception {
        final DOMParser parser = new DOMParser();
        final ByteArrayInputStream is = new ByteArrayInputStream(data.getBytes("UTF-8"));
        parser.parse(new InputSource(is));
        return parser.getDocument();
    }

    private String getXmlString(final Node node) throws Exception {

import org.codelibs.fess.query.QueryProcessor;
import org.codelibs.fess.query.TermQueryCommand;
import org.codelibs.fess.query.TermRangeQueryCommand;
import org.codelibs.fess.query.WildcardQueryCommand;
import org.codelibs.fess.query.parser.QueryParser;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;
import org.opensearch.index.query.BoolQueryBuilder;
import org.opensearch.index.query.QueryBuilder;

            final SAXParser parser = factory.newSAXParser();
            parser.setProperty(XMLConstants.ACCESS_EXTERNAL_DTD, StringUtil.EMPTY);
            parser.setProperty(XMLConstants.ACCESS_EXTERNAL_SCHEMA, StringUtil.EMPTY);
            parser.parse(is, this);
        } catch (final Exception e) {