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:21-opus-22307
	https://publikationen.uni-tuebingen.de/xmlui/handle/10900/44796 Success. Document available.
	http://d-nb.info/979010926/34 STATUS : 301 → Redirecting to : https://d-nb.info/979010926/34
	https://d-nb.info/979010926/34 RESTEASY004655: Unable to invoke request: java.net.SocketTimeoutException: Read timed out

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