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:0156-11713
	https://www.arl-net.de/system/files/pdf/2024-03/fb_023_gesamt.pdf STATUS : 403 → Skipping : https://www.arl-net.de/system/files/pdf/2024-03/fb_023_gesamt.pdf
	http://d-nb.info/1324430893/34 STATUS : 301 → Redirecting to : https://d-nb.info/1324430893/34
	https://d-nb.info/1324430893/34 STATUS : 404 → Skipping : https://d-nb.info/1324430893/34

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