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1<?php
2namespace Apie\IanaValueObjects\HttpHeader;
3
4use Apie\Core\Lists\StringSet;
5use Apie\Core\ValueObjects\Interfaces\LimitedOptionsInterface;
6use Apie\Core\ValueObjects\Interfaces\StringValueObjectInterface;
7use Apie\IanaValueObjects\StaticDataValueObject;
8
9/**
10 * All message headers (HTTP fields) registered in the IANA HTTP Field Names Registry.
11 *
12 * @see https://www.iana.org/assignments/http-fields/http-fields.xhtml
13 *
14 * Any header that is not active/valid anymore (e.g. deprecated/obsoleted) can be used as well (for data integrity).
15 */
16final class HttpHeader implements StringValueObjectInterface, LimitedOptionsInterface
17{
18    use IsHttpHeader, StaticDataValueObject {
19        IsHttpHeader::convert insteadof StaticDataValueObject;
20    }
21
22    protected static function requiresActive(): bool
23    {
24        return false;
25    }
26
27    public static function getOptions(): StringSet
28    {
29        return new StringSet(array_keys(static::getData()));
30    }
31}