public function getDefaultParent()
    {
        if ($defaultParents = $this->config()->default_parents) {
            
            if (isset($defaultParents[$this->getClass()])) {
                
                $result = $this->processValue($defaultParents[$this->getClass()]);
                
                if ($result instanceof DataObject) {
                    return $result->ID;
                }
                
                return $result;
                
            }
            
        }
    }