fact: Definition id_two_disp {C₁ C₂ : precategory_data} {D : twosided_disp_cat_data} {x : C₁} {y : C₂} (xy : D x y) : xy -->[ identity x ][ identity y ] xy := pr12 D x y xy.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.DisplayedCats.Core UniMath.CategoryTheory.PrecategoryBinProduct