fact: Definition functorial_identity_of_helper x : @functorial_morphism_of_object_of _ _ _ S T 1 1 1 1 1 x = x.
imports: Functor.Core NaturalTransformation.Core Functor.Composition.Core NaturalTransformation.Composition.Core NaturalTransformation.Composition.Laws Functor.Paths Category.Strict HoTT.Tactics PathGroupoids Types.Forall