fact: Definition coslice_cat_disp_data : disp_cat_data C := coslice_cat_disp_ob_mor ,, coslice_cat_disp_id_comp.
imports: UniMath.Foundations.PartA UniMath.Foundations.PartD UniMath.MoreFoundations.Tactics UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.DisplayedCats.Core UniMath.CategoryTheory.DisplayedCats.Total