∀ {α : Type u} {β : α → Type v} [inst : BEq α] [inst_1 : Hashable α] [inst_2 : LawfulBEq α]
  {m : Std.DHashMap.Internal.Raw₀ α β},
  Std.DHashMap.Internal.Raw.WFImp ↑m →
    ∀ {a : α} [inst_3 : Inhabited (β a)],
      m.get!ₘ a = Std.Internal.List.getValueCast! a (Std.DHashMap.Internal.toListModel (↑m).buckets)