public function addSubLayout($seed = 'Generic', $addDivider = true)
    {
        $v = $this->add($this->factory($seed, ['form' => $this->form], 'FormLayout/Section'));
        if ($v instanceof \atk4\ui\FormLayout\Section\Generic) {
            $v = $v->addSection();
        }

        if ($addDivider) {
            $this->add(['ui' => 'hidden divider']);
        }

        return $v;
    }