∀ {A : Type u₁} [inst : CategoryTheory.Category.{v₁, u₁} A] {B : Type u₂} [inst_1 : CategoryTheory.Category.{v₂, u₂} B]
  {T : Type u₃} [inst_2 : CategoryTheory.Category.{v₃, u₃} T] (L : CategoryTheory.Functor A T)
  (R : CategoryTheory.Functor B T) [CategoryTheory.IsCofiltered A] [CategoryTheory.IsCofiltered B] [L.Initial],
  CategoryTheory.IsCofiltered (CategoryTheory.Comma L R)