When searching for a url, url entities should have ["relation-list"] as an array of IRelation instead of .relations

[Lioncat6]

See: https://musicbrainz.org/ws/2/url?query=url:%2Fhttps%3A\%2F\%2Fmusic\.apple\.com\%2F[a-zA-Z]{2}\%2Fartist\%2F(1587049088|1783597393)%2F&fmt=json

vs

https://musicbrainz.org/ws/2/url?resource=https://open.spotify.com/album/5Q52ZwSnCxblvu4Qa8axvS&resource=https://open.spotify.com/album/1LgfUTgxZsdNV6CvK3eU4x&fmt=json&inc=release-rels

[Lioncat6]

This appears to be an error on musicbrainz's side though:

With relationships included, entities will have <relation-list> nodes for each target entity type (XML) or a relations object containing all relationships (JSON). You can see some examples the examples page.

[Lioncat6]

I'll leave this open until metabrainz/mb-solr#69 gets merged

[Borewit]

Happy with a workaround @Lioncat6 ? Please review PR #1137