∀ {C : Type u} [inst : CategoryTheory.Category.{v, u} C] (J : CategoryTheory.GrothendieckTopology C) (D : Type w)
  [inst_1 : CategoryTheory.Category.{w', w} D]
  [inst_2 :
    ∀ (P : CategoryTheory.Functor Cᵒᵖ D) (X : C) (S : J.Cover X), CategoryTheory.Limits.HasMultiequalizer (S.index P)]
  (X : C) {X_1 Y : CategoryTheory.Functor Cᵒᵖ D} (η : X_1 ⟶ Y), (J.diagramFunctor D X).map η = J.diagramNatTrans η X