(motive : Option (Array Lean.Meta.CasesSubgoal) → Sort u_1) →
  (__discr : Option (Array Lean.Meta.CasesSubgoal)) →
    ((goals : Array Lean.Meta.CasesSubgoal) → motive (some goals)) →
      ((x : Option (Array Lean.Meta.CasesSubgoal)) → motive x) → motive __discr