(motive : Lean.Meta.LibrarySearch.DeclMod → Sort u_1) →
  (x : Lean.Meta.LibrarySearch.DeclMod) →
    (Unit → motive Lean.Meta.LibrarySearch.DeclMod.none) →
      (Unit → motive Lean.Meta.LibrarySearch.DeclMod.mp) →
        (Unit → motive Lean.Meta.LibrarySearch.DeclMod.mpr) → motive x