Interface RestOptionsBody

The per-instance row this COLLECTION carries as level series, and the field that indexes them — the collection's own declaration (carried-series.ts), so a generic client learns from the contract that declaring instances of carries is how it asks for this frame, and decodes each series field through the limit published beside it in fields. Both present on a carrying collection, both absent otherwise.

Present, and true, exactly when this row is PUMP-FED — the same fact the index publishes under demand, answered at the row's own address (demand gate §3d). Absent otherwise.

Every id this entity currently has, when it can enumerate — the console ROSTER, asked at the layer that publishes declarations. Absent means "this entity cannot say", which a client must not read as "there are none".