fact: Definition IsLimit := @IsRightKanExtensionAlong _ D 1 C (Functors.to_terminal _) F.
imports: Category.Core Functor.Core NaturalTransformation.Core Functor.Composition.Core ExponentialLaws.Law1.Functors FunctorCategory.Core KanExtensions.Core InitialTerminalCategory.Core NatCategory Functor.Paths