∀ {C : Type u} [inst : CategoryTheory.Category.{v, u} C] [inst_1 : HomotopicalAlgebra.CategoryWithFibrations C]
  [inst_2 : CategoryTheory.Limits.HasTerminal C] (X : HomotopicalAlgebra.FibrantObject C),
  HomotopicalAlgebra.IsFibrant (HomotopicalAlgebra.FibrantObject.ι.obj X)