protected function removeContent()
{
$this->documentType->delete();
$this->property->delete();
$this->tabModel->delete();
$this->view->delete();
$this->layout->delete();
$this->script->delete();
$this->datatype->delete();
$this->document->delete();
unset($this->documentType);
unset($this->property);
unset($this->tabModel);
unset($this->view);
unset($this->layout);
unset($this->script);
unset($this->datatype);
unset($this->document);
}