∀ {α : Type u} [inst : BEq α] [inst_1 : Hashable α] {β : Type v} (m₁ m₂ : Std.DHashMap.Internal.Raw₀ α fun x => β)
  [EquivBEq α] [LawfulHashable α],
  (↑m₁).WF →
    (↑m₂).WF →
      (↑m₁).Equiv ↑m₂ →
        ∀ {k : α} [inst_4 : Inhabited β],
          Std.DHashMap.Internal.Raw₀.Const.get! m₁ k = Std.DHashMap.Internal.Raw₀.Const.get! m₂ k