{motive : Lean.Elab.Tactic.ElimTargetInfo✝ → Sort u} →
  (t : Lean.Elab.Tactic.ElimTargetInfo✝¹) →
    ((view : Lean.Elab.Tactic.ElimTargetView) →
        (expr : Lean.Expr) →
          (arg? : Option Lean.Meta.GeneralizeArg) → motive { view := view, expr := expr, arg? := arg? }) →
      motive t