public Xml addContent(String text) {
        if(current == null) {
            throw new XmlModelException("Content can not be attached as root element: " + text);
        }
        Content content = new Content(text);
        content.setParent(current);
        current.addChildElement(content);
        return this;
    }
public Xml addContent ( String text ) { if ( current == null ) { throw new XmlModelException ( "Content can not be attached as root element: " + text ) ; } Content content = new Content ( text ) ; content . setParent ( current ) ; current . addChildElement ( content ) ; return this ; }
Add a {@code Content} element. The cursor will point to the parent element after calling this method since child
elements that are of the Content type can't have child elements.
@param text character data
@return {@code Xml}