{motive : Lean.Elab.Tactic.SavedState → Sort u} →
  (t : Lean.Elab.Tactic.SavedState) →
    ((term : Lean.Elab.Term.SavedState) →
        (tactic : Lean.Elab.Tactic.State) → motive { term := term, tactic := tactic }) →
      motive t