(motive : Option Lean.LibrarySuggestions.Selector → Sort u_1) →
  (__discr : Option Lean.LibrarySuggestions.Selector) →
    ((selector : Lean.LibrarySuggestions.Selector) → motive (some selector)) →
      ((x : Option Lean.LibrarySuggestions.Selector) → motive x) → motive __discr