/**
* Render a form <input> element from the provided $element
*
* @param ElementInterface $element
* @throws Exception\DomainException
* @return string
*/
public function render(ElementInterface $element)
{
$src = $element->getAttribute('src');
if (empty($src)) {
throw new Exception\DomainException(sprintf('%s requires that the element has an assigned src; none discovered', __METHOD__));
}
return parent::render($element);
}
