(motive : Option (Lean.Name × Lean.Expr) → Sort u_1) →
  (x : Option (Lean.Name × Lean.Expr)) →
    ((n : Lean.Name) → (snd : Lean.Expr) → motive (some (n, snd))) →
      ((x : Option (Lean.Name × Lean.Expr)) → motive x) → motive x