public function testMultipleInstances() {
$storage1 = $this
->getStorage();
$storage1
->start();
$storage1
->getBag('attributes')
->set('foo', 'bar');
$storage1
->save();
$storage2 = $this
->getStorage();
$storage2
->setId($storage1
->getId());
$storage2
->start();
$this
->assertEquals('bar', $storage2
->getBag('attributes')
->get('foo'), 'values persist between instances');
}