fact: Definition isaprop_has_pb_ump (HB_2_1 : is_univalent_2_1 B) (p : pb_cone) : isaprop (has_pb_ump p).
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.Bicategories.Core.Bicat UniMath.Bicategories.Core.Invertible_2cells UniMath.Bicategories.Core.Univalence