public function testRegenerate() {
$this->storage
->start();
$this->storage
->getBag('attributes')
->set('regenerate', 1234);
$this->storage
->regenerate();
$this
->assertEquals(1234, $this->storage
->getBag('attributes')
->get('regenerate'));
$this->storage
->regenerate(true);
$this
->assertEquals(1234, $this->storage
->getBag('attributes')
->get('regenerate'));
}