{C : Type u_1} →
  [inst : CategoryTheory.Category.{v_1, u_1} C] →
    {X Y : C} →
      {f : Y ⟶ X} →
        {motive : CategoryTheory.EffectiveEpi f → Sort u} →
          (t : CategoryTheory.EffectiveEpi f) →
            ((effectiveEpi : Nonempty (CategoryTheory.EffectiveEpiStruct f)) → motive ⋯) → motive t