{motive : Lean.Elab.Tactic.Do.ExceptCondsDefault✝ → Sort u} →
  (t : Lean.Elab.Tactic.Do.ExceptCondsDefault✝¹) →
    Lean.Elab.Tactic.Do.ExceptCondsDefault.ctorIdx✝ t = 3 →
      ((e : Lean.Expr) → motive (Lean.Elab.Tactic.Do.ExceptCondsDefault.other✝ e)) → motive t