public function parse($site_id, $is_child, $theatre_id, $subspecialty_id, $firm_id)
{
foreach ($this->children as $rule) {
if ($rule->applies($site_id, $is_child, $theatre_id, $subspecialty_id, $firm_id)) {
return $rule->parse($site_id, $is_child, $theatre_id, $subspecialty_id, $firm_id);
}
}
return $this;
}