/**
* Inserts a field after a particular field in a FieldList.
*
* @param string $insertAfter Name of the field to insert after
* @param FormField $field The form field to insert
* @return FormField|null
*/
public function insertAfter($insertAfter, $field)
{
if ($field instanceof Tab || $field instanceof TabSet) {
$field->setTabSet($this);
}
return parent::insertAfter($insertAfter, $field);
}
