DBProvider.requireItem()method
requireItem(collection: Collection<string, II, TT>, id: II): Promise<Item<II, TT>>
Get an item from a collection by its id, or throw if it doesn't exist.
requireItem(collection: Collection<string, II, TT>, id: II): Promise<Item<II, TT>>
Get an item from a collection by its id, or throw if it doesn't exist.