<?php declare(strict_types=1); namespace ZipStream\Zs; use ZipStream\PackField; /** * @internal */ abstract class ExtendedInformationExtraField { private const TAG = 0x5653; public static function generate(): string { return PackField::pack( new PackField(format: 'v', value: self::TAG), new PackField(format: 'v', value: 0x0000), ); } }