private function getRenderFor($format)
    {
        if (!isset($this->renders[$format])) {
            throw new \InvalidArgumentException(sprintf('No render founds for this format [%s]', $format));
        }

        return $this->renders[$format];
    }
private function getRenderFor($format)
    {
        if (!isset($this->renders[$format])) {
            throw new \InvalidArgumentException(sprintf('No render founds for this format [%s]', $format));
        }

        return $this->renders[$format];
    }
@param $format

@return RenderInterface