With this function, the resolver checks all associated URLs and marks them either with a green tick or, in the event of an error, with a red cross. Users are redirected to the first URL marked in green.

Analyse	urn:nbn:de:101:1-20091113769
	http://wwww.entomologica.de RESTEASY004655: Unable to invoke request: java.net.UnknownHostException: wwww.entomologica.de: Name or service not known
	http://d-nb.info/998088501/34 STATUS : 301 → Redirecting to : https://d-nb.info/998088501/34
	https://d-nb.info/998088501/34 STATUS : 404 → Skipping : https://d-nb.info/998088501/34

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