public function index()
{
try {
$dataCategory = new Categories();
$dataListcategories = $dataCategory->allcategories();
$this->_responseWS->setDataResponse(Response::HTTP_OK, $dataListcategories->toArray(), array(), 'ok');
} catch (Exception $exc) {
$this->_responseWS->setDataResponse(Response::HTTP_INTERNAL_SERVER_ERROR, array(), array(), '');
}
$this->_responseWS->response();
}