return metadata.get(key);
    }

    public Set<String> getKeySet() {
        return metadata.keySet();
    }

    public String getContent() {
        return content;
    }

    public void setContent(final String content) {
        this.content = content;
    }

    @Override
    public String toString() {

                logger.error("Failed to access {}, code: {}.", url, response.getStatusLine().getStatusCode());
                return null;
            }

            data.setContent(EntityUtils.toString(response.getEntity(), Charsets.UTF_8));
            final Header[] headers = response.getAllHeaders();
            for (final Header header : headers) {

    //                                                                            ========
    public String getContent() {
        checkSpecifiedProperty("content");
        return convertEmptyToNull(content);
    }

    public void setContent(String value) {
        registerModifiedProperty("content");
        this.content = value;
    }

    public String getCreatedBy() {

    //                                       ---------------
    protected final Map<String, PropertyGateway> _epgMap = newHashMap();
    {
        setupEpg(_epgMap, et -> ((RelatedContent) et).getContent(), (et, vl) -> ((RelatedContent) et).setContent(DfTypeUtil.toString(vl)),
                "content");
        setupEpg(_epgMap, et -> ((RelatedContent) et).getCreatedBy(),

    protected <RESULT extends RelatedContent> RESULT createEntity(Map<String, Object> source, Class<? extends RESULT> entityType) {
        try {
            final RESULT result = entityType.newInstance();
            result.setContent(DfTypeUtil.toString(source.get("content")));
            result.setCreatedBy(DfTypeUtil.toString(source.get("createdBy")));
            result.setCreatedTime(DfTypeUtil.toLong(source.get("createdTime")));

ns(null!==n?n:this.element.ownerDocument.documentElement,this.element);if(t.isDefaultPrevented()||!i)return;var o=this.getTipElement(),r=_.getUID(this.constructor.NAME);o.setAttribute("id",r),this.element.setAttribute("aria-describedby",r),this.setContent(),this.config.animation&&g(o).addClass(qe);var s="function"==typeof this.config.placement?this.config.placement.call(this,o,this.element):this.config.placement,a=this._getAttachment(s);this.addAttachmentClass(a);var l=this._getContainer();g(o)....

ns(null!==n?n:this.element.ownerDocument.documentElement,this.element);if(e.isDefaultPrevented()||!i)return;var s=this.getTipElement(),l=d.getUID(this.constructor.NAME);s.setAttribute("id",l),this.element.setAttribute("aria-describedby",l),this.setContent(),this.config.animation&&o.default(s).addClass(Lt);var r="function"==typeof this.config.placement?this.config.placement.call(this,s,this.element):this.config.placement,u=this._getAttachment(r);this.addAttachmentClass(u);var f=this._getContainer...

ger","tip","_setListeners","enable","disable","toggleEnabled","dataKey","_getDelegateConfig","click","_isWithActiveTrigger","_enter","_leave","getTipElement","_hideModalHandler","isWithContent","shadowRoot","isInTheDom","ownerDocument","tipId","setContent","attachment","_getAttachment","addAttachmentClass","_getContainer","complete","_fixTransition","prevHoverState","_cleanTipClass","getTitle","CLASS_PREFIX","setElementContent","content","text","empty","append","behavior","arrow","onCreate","ori...

ger","tip","_setListeners","enable","disable","toggleEnabled","dataKey","_getDelegateConfig","click","_isWithActiveTrigger","_enter","_leave","getTipElement","_hideModalHandler","isWithContent","shadowRoot","isInTheDom","ownerDocument","tipId","setContent","attachment","_getAttachment","addAttachmentClass","_getContainer","complete","_fixTransition","prevHoverState","_cleanTipClass","getTitle","setElementContent","content","text","empty","append","behavior","arrow","onCreate","originalPlacement"...

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