{C : Type u_1} →
  [inst : CategoryTheory.Category.{v_1, u_1} C] →
    {B : C} →
      {α : Type u_2} →
        {X : α → C} →
          {π : (a : α) → X a ⟶ B} →
            {motive : CategoryTheory.EffectiveEpiFamily X π → Sort u} →
              ((effectiveEpiFamily : Nonempty (CategoryTheory.EffectiveEpiFamilyStruct X π)) → motive ⋯) →
                (t : CategoryTheory.EffectiveEpiFamily X π) → motive t