∀ {α : Type u} {β : α → Type v} [inst : BEq α] [inst_1 : Hashable α] [inst_2 : LawfulBEq α] {m : Std.DHashMap.Raw α β}
  (h : m.WF) {a : α} [inst_3 : Inhabited (β a)], m.get! a = Std.DHashMap.Internal.Raw₀.get! ⟨m, ⋯⟩ a