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:bsz:289-oparu-42763-2
	https://oparu.uni-ulm.de/xmlui/123456789/42763 STATUS : 302 → Redirecting to : https://oparu.uni-ulm.de/123456789/42763
	https://oparu.uni-ulm.de/123456789/42763 RESTEASY004655: Unable to invoke request: java.net.SocketTimeoutException: Read timed out
	http://d-nb.info/1254939725/34 STATUS : 301 → Redirecting to : https://d-nb.info/1254939725/34
	https://d-nb.info/1254939725/34 STATUS : 404 → Skipping : https://d-nb.info/1254939725/34

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