public static function createChildPermission($role, $name, $description)
    {
        // Create permission with a given name and description and add it to RBAC system
        $auth = Yii::$app->authManager;
        $permission = $auth->createPermission($name);
        $permission->description = $description;
        $auth->add($permission);

        // Add this permission to a given role
        $auth->addChild($role, $permission);

        return $permission;
    }