∀ {α : Type u} [inst : BEq α] [inst_1 : Hashable α] {β : Type v} (m : Std.DHashMap.Internal.Raw₀ α fun x => β)
  [LawfulHashable α] [EquivBEq α] {p : α → Bool}, (↑m).keys.all p = (↑m).all fun a x => p a