pub fn discography(response: &Json) -> (Vec<KnownRelease>, usize)Expand description
One page of an artist’s discography, and how many there are in all.
The total comes back as release-group-count and is what tells the caller
whether to ask for another page. Absent, it is taken to be what arrived:
stopping is the safe reading, since paging forever on a field that was never
there would be a request per second with no end.