{motive : Lean.Server.FileWorker.Hover.RWState✝ → Sort u} →
  (ctorIdx : ℕ) →
    (t : Lean.Server.FileWorker.Hover.RWState✝¹) →
      ctorIdx = Lean.Server.FileWorker.Hover.RWState.ctorIdx✝ t →
        Lean.Server.FileWorker.Hover.RWState.ctorElimType✝ ctorIdx → motive t