Function next_up 

pub fn next_up(
    _caps: &ServerCapabilities,
    user_id: &str,
    series_id: Option<&str>,
    limit: Option<usize>,
) -> String

A Next Up listing.

EnableResumable=false is the point of this query: the server default is true, which makes a partially-watched episode its own series’ “next up” — the very episode /Items/Resume returns — so Continue Watching and Next Up end up showing the same cards. Servers predating the parameter ignore it, which is why the frontend also drops in-progress entries (DR-197).

TRACES: UR-023, UR-059, UR-085 | DR-197, DR-279, JA-014, JA-036 | UT-190, UT-191