fact: Variable F : Pseudofunctor C.
imports: Category.Core Functor.Core NaturalTransformation.Core Category.Morphisms FunctorCategory.Morphisms Functor.Composition.Core NaturalTransformation.Composition.Core NaturalTransformation.Composition.Laws NaturalTransformation.Isomorphisms NaturalTransformation.Paths FunctorCategory.Core Pseudofunctor.Core HoTT.Tactics