protected function tearDown()
{
$this->datatype->delete();
$this->documentType->delete();
$this->layout->delete();
$this->property->delete();
$this->tab->delete();
$this->user->delete();
$this->view->delete();
unset($this->datatype);
unset($this->documentType);
unset($this->layout);
unset($this->property);
unset($this->tab);
unset($this->user);
unset($this->view);
unset($this->object);
}