docs: function createElement(type, annotation) {
        var tagName = TAG_NAME[type];
        if (!tagName) {
          return null;
        }
        var element = window.document.createElement(tagName);
        element.localName = tagName;
        var name = TAG_ANNOTATION[type];
        if (name && annotation) {
          element[name] = annotation.trim();
        }
        return element;
      }