facetQueryView.setTitle(title1);
        assertEquals(title1, facetQueryView.getTitle());

        String title2 = "Different Title";
        facetQueryView.setTitle(title2);
        assertEquals(title2, facetQueryView.getTitle());

        facetQueryView.setTitle(null);
        assertNull(facetQueryView.getTitle());
    }

    // Test query map operations
    public void test_getQueryMap() {

    public List<String> getList() {
        return list;
    }

    public void setList(final List<String> list) {
        this.list = list;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(final String title) {
        this.title = title;
    }

    public String getBody() {
        return body;
    }

    public void setBody(final String body) {

    /**
     * Gets the title for this facet query view.
     *
     * @return the title string
     */
    public String getTitle() {
        return title;
    }

    /**
     * Sets the title for this facet query view.
     *
     * @param title the title to set
     */
    public void setTitle(final String title) {
        this.title = title;
    }

    /**

            result.setTelephoneNumber(DfTypeUtil.toString(source.get("telephoneNumber")));
            result.setTeletexTerminalIdentifier(DfTypeUtil.toString(source.get("teletexTerminalIdentifier")));
            result.setTitle(DfTypeUtil.toString(source.get("title")));
            result.setUidNumber(DfTypeUtil.toLong(source.get("uidNumber")));
            result.setX121Address(DfTypeUtil.toString(source.get("x121Address")));

        registerModifiedProperty("teletexTerminalIdentifier");
        this.teletexTerminalIdentifier = value;
    }

    public String getTitle() {
        checkSpecifiedProperty("title");
        return convertEmptyToNull(title);
    }

    public void setTitle(String value) {
        registerModifiedProperty("title");
        this.title = value;
    }

    public Long getUidNumber() {

        assertEquals("labels.facet_timestamp_title", view1.getTitle());
        assertEquals(4, view1.getQueryMap().size());
        FacetQueryView view2 = list.get(1);
        assertEquals("labels.facet_contentLength_title", view2.getTitle());
        assertEquals(5, view2.getQueryMap().size());
        FacetQueryView view3 = list.get(2);
        assertEquals("labels.facet_filetype_title", view3.getTitle());
        assertEquals(10, view3.getQueryMap().size());

                (et, vl) -> ((User) et).setTeletexTerminalIdentifier(DfTypeUtil.toString(vl)), "teletexTerminalIdentifier");
        setupEpg(_epgMap, et -> ((User) et).getTitle(), (et, vl) -> ((User) et).setTitle(DfTypeUtil.toString(vl)), "title");
        setupEpg(_epgMap, et -> ((User) et).getUidNumber(), (et, vl) -> ((User) et).setUidNumber(DfTypeUtil.toLong(vl)), "uidNumber");

            if (values.length != 2) {
                return;
            }
            final FacetQueryView facetQueryView = new FacetQueryView();
            facetQueryView.setTitle(values[0]);
            split(values[1], "\t").of(subStream -> subStream.map(String::trim).filter(StringUtil::isNotEmpty).forEach(v -> {
                final String[] facet = StringUtils.split(v, "=", 2);

                setAttributeValue(result, fessConfig.getLdapAttrDescription(), o -> user.setDescription(o.toString()));
                setAttributeValue(result, fessConfig.getLdapAttrTitle(), o -> user.setTitle(o.toString()));
                setAttributeValue(result, fessConfig.getLdapAttrPager(), o -> user.setPager(o.toString()));
                setAttributeValue(result, fessConfig.getLdapAttrStreet(), o -> user.setStreet(o.toString()));

        assertEquals("", documentHelper.getTitle(responseData, null, dataMap));
        assertEquals("", documentHelper.getTitle(responseData, "", dataMap));
        assertEquals("", documentHelper.getTitle(responseData, " ", dataMap));
        assertEquals("", documentHelper.getTitle(responseData, "  ", dataMap));
        assertEquals("", documentHelper.getTitle(responseData, "\t", dataMap));