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1<?php
2namespace Apie\IanaValueObjects;
3
4use Apie\Core\Lists\StringSet;
5use Apie\Core\ValueObjects\Interfaces\LimitedOptionsInterface;
6use Apie\Core\ValueObjects\Interfaces\StringValueObjectInterface;
7
8/**
9 * All language regions registered in the IANA Language Subtag Registry.
10 *
11 * Only active language regions can be used.
12 */
13final class ActiveLanguageRegion implements StringValueObjectInterface, LimitedOptionsInterface
14{
15    use IsLanguageSubtag;
16
17    protected static function requiresActive(): bool
18    {
19        return true;
20    }
21
22    protected static function getData(): array
23    {
24        return require __DIR__ . '/../fixtures/language-regions.php';
25    }
26
27    public static function getOptions(): StringSet
28    {
29        return new StringSet(array_keys(static::getActiveData()));
30    }
31}