public function appendContent($content)
    {
        if ($this->isVoid) {
            throw new Exception\RuntimeException(
                'Void elements can\'t contain content.'
            );
        }

        $this->content .= $content;

        return $this;
    }
public function appendContent($content)
    {
        if ($this->isVoid) {
            throw new Exception\RuntimeException(
                'Void elements can\'t contain content.'
            );
        }

        $this->content .= $content;

        return $this;
    }
public function appendContent ( $ content ) { if ( $ this -> isVoid ) { throw new Exception \ RuntimeException ( 'Void elements can\'t contain content.' ) ; } $ this -> content .= $ content ; return $ this ; }
Append content before other content

@param string $content

@throws Exception\RuntimeException
@return  \SxCore\Html\HtmlElement
Append content before other content