setExtra example

        return new StaticEntityRepository([new LanguageCollection([$language]), new LanguageCollection([$language])]);
    }

    private function getComposerPackage(): CompletePackage
    {
        $completePackage = new CompletePackage('foo', '1.0.0', '1.0.0');
        $completePackage->setAutoload([
            'psr-4' => [
                'Foo\\' => 'bar',
            ],
        ]);
        $completePackage->setExtra([
            'label' => [
                'en-GB' => 'foo',
            ],
            'description' => [
                'en-GB' => 'foo',
            ],
        ]);

        return $completePackage;
    }
}