public function revokeRolePermission($role, $key, $rangeEnd = null)
    {
        $params = [
            'role' => $role,
            'key' => $key,
        ];
        if ($rangeEnd !== null) {
            $params['range_end'] = $rangeEnd;
        }

        $body = $this->request(self::URI_AUTH_ROLE_REVOKE, $params);

        return $body;
    }