public function setDebugging(string $debugging = "F") : CNabuDataObject
    {
        if ($debugging === null) {
            throw new ENabuCoreException(
                    ENabuCoreException::ERROR_NULL_VALUE_NOT_ALLOWED_IN,
                    array("\$debugging")
            );
        }
        $this->setValue('nb_site_module_debugging', $debugging);
        
        return $this;
    }