{motive : Lean.IR.Borrow.ParamMap.Key → Sort u} →
  (t : Lean.IR.Borrow.ParamMap.Key) →
    t.ctorIdx = 1 →
      ((name : Lean.IR.FunId) → (jpid : Lean.IR.JoinPointId) → motive (Lean.IR.Borrow.ParamMap.Key.jp name jpid)) →
        motive t