(motive : Option (Lean.Expr × Lean.Expr × Lean.Elab.Tactic.Do.FailureCondHints✝) → Sort u_1) →
  (suggestion? : Option (Lean.Expr × Lean.Expr × Lean.Elab.Tactic.Do.FailureCondHints✝¹)) →
    ((success onReturn : Lean.Expr) →
        (failureConds : Lean.Elab.Tactic.Do.FailureCondHints✝²) → motive (some (success, onReturn, failureConds))) →
      ((x : Option (Lean.Expr × Lean.Expr × Lean.Elab.Tactic.Do.FailureCondHints✝³)) → motive x) → motive suggestion?