fact: Definition cgraph_forget : cgraph_category ⟶ HSET := @make_functor cgraph_precategory hset_precategory cgraph_forget_data is_functor_cgraph_forget.
imports: UniMath.Foundations.PartA UniMath.Foundations.Sets UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Categories.HSET.Core UniMath.Combinatorics.CGraph