public function setScope(string $scope = "O") : CNabuDataObject
    {
        if ($scope === null) {
            throw new ENabuCoreException(
                    ENabuCoreException::ERROR_NULL_VALUE_NOT_ALLOWED_IN,
                    array("\$scope")
            );
        }
        $this->setValue('nb_catalog_taxonomy_scope', $scope);
        
        return $this;
    }