public function getContent()
    {

        $this->tagName = 'rect';
        $this->addAttribute('x', $this->x);
        $this->addAttribute('y', $this->y);
        $this->addAttribute('width', $this->width);
        $this->addAttribute('height', $this->height);
        $this->addAttribute('fill', $this->color);
        $this->addAttribute('stroke-width', $this->borderWidth);
        $this->addAttribute('stroke', $this->borderColor);

        return parent::getContent();
    }