fact: Definition full_subcat_nat_trans_is_z_iso {C D : category} {F : functor C D} {G : functor C D} (eta : nat_trans F G) : sub_precategories C.
imports: UniMath.Foundations.Preamble UniMath.Foundations.Propositions UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Subcategory.Core UniMath.CategoryTheory.Subcategory.Full UniMath.CategoryTheory.Adjunctions.Core UniMath.CategoryTheory.Equivalences.Core UniMath.CategoryTheory.whiskering