Update `GetIndexResourceHandler.php` #638

Job	Run time
ci / Generate job matrix	6s
ci / QA Checks (PHPStan [8.2, latest], ubuntu-latest, laminas/laminas-continuous-integration-action@v1...	1m 17s
ci / QA Checks (PHPUnit [8.3, latest], ubuntu-latest, laminas/laminas-continuous-integration-action@v1...	1m 38s
ci / QA Checks (PHPUnit [8.3, lowest], ubuntu-latest, laminas/laminas-continuous-integration-action@v1...	1m 38s
ci / QA Checks (PHPUnit [8.2, lowest], ubuntu-latest, laminas/laminas-continuous-integration-action@v1...	1m 38s
ci / QA Checks (PHPUnit [8.2, latest], ubuntu-latest, laminas/laminas-continuous-integration-action@v1...	1m 49s
ci / QA Checks (PHPCodeSniffer [8.2, latest], ubuntu-latest, laminas/laminas-continuous-integration-ac...	1m 22s
	9m 28s

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