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:bvb:355-epub-438315
	http://epub.uni-regensburg.de/43831 STATUS : 302 → Redirecting to : https://epub.uni-regensburg.de/43831
	https://epub.uni-regensburg.de/43831 STATUS : 404 → Skipping : https://epub.uni-regensburg.de/43831

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