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:gbv:715-oops-71120
	http://oops.uni-oldenburg.de/7031 STATUS : 302 → Redirecting to : http://oops.uni-oldenburg.de/7031/
	http://oops.uni-oldenburg.de/7031/ Success. Document available.
	https://d-nb.info/135245078X/34 STATUS : 404 → Skipping : https://d-nb.info/135245078X/34

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