/**
* Inserts an element in the container
*
* If the reference object is not given, the element will be appended.
*
* @param HTML_QuickForm2_Node Element to insert
* @param HTML_QuickForm2_Node Reference to insert before
* @return HTML_QuickForm2_Node Inserted element
*/
public function insertBefore(HTML_QuickForm2_Node $element, HTML_QuickForm2_Node $reference = null)
{
if (null === $reference) {
return $this->appendChild($element);
}
return parent::insertBefore($this->renameChild($element), $reference);
}