getIsoList example

static::assertNotNull($result_en_GB);
        static::assertNotNull($result_de_DE);
        static::assertSame('en-GB', $result_en_GB->getIso());
        static::assertSame('de-DE', $result_de_DE->getIso());
        static::assertNull($result_NA);
    }

    public function testGetIsoList(): void
    {
        $collection = $this->getCollection();
        $isoList = $collection->getIsoList();

        static::assertCount(2, $isoList);
        static::assertContains('de-DE', $isoList);
        static::assertContains('en-GB', $isoList);
    }

    public function testGetLanguageFilesByIso(): void
    {
        $collection = $this->getCollection();

        $result_en_GB = $collection->getSnippetFilesByIso('en-GB');