∀ {α₂ γ : Type u_1} (motive : Option (Std.Iter γ) → Sort u_2) (it₂ : Std.Iter γ) (h_1 : Unit → motive none)
  (h_2 : (it₂ : Std.Iter γ) → motive (some it₂)),
  (match some it₂ with
    | none => h_1 ()
    | some it₂ => h_2 it₂) =
    h_2 it₂