fact: Definition extendable_to_O'@{i j k | j <= i, k <= i} (O : Subuniverse@{i}) (T : Type@{j}) `{Reflects O T} {Q : Type@{k}} {Q_inO : In O Q} : ooExtendableAlong (to O T) (fun _ => Q).
imports: HoTT.Basics HoTT.Types Equiv.BiInv Extensions HProp HFiber NullHomotopy Limits.Pullback PathAny Colimits.Pushout