protected static function _implodeSubIDs(\GMP ...$subids): string
    {
        return implode(".",
            array_map(function ($num) {
                return gmp_strval($num, 10);
            }, $subids));
    }
protected static function _implodeSubIDs(\GMP ...$subids): string
    {
        return implode(".",
            array_map(function ($num) {
                return gmp_strval($num, 10);
            }, $subids));
    }
protected static function _implodeSubIDs ( \ GMP ... $ subids ) : string { return implode ( "." , array_map ( function ( $ num ) { return gmp_strval ( $ num , 10 ) ; } , $ subids ) ) ; }
Implode an array of sub IDs to dotted OID format.

@param \GMP ...$subids
@return string
Implode an array of sub IDs to dotted OID format .