protected function tearDown()
{
$this->boostrap->uninstall();
$this->document->delete();
$this->view->delete();
$this->layout->delete();
$this->documentType->delete();
$this->user->delete();
unset($this->document);
unset($this->object);
unset($this->view);
unset($this->layout);
unset($this->documentType);
unset($this->user);
}