∀ (e : Mathlib.Tactic.BicategoryLike.Mor₂) (η : Mathlib.Tactic.BicategoryLike.WhiskerRight)
  (f : Mathlib.Tactic.BicategoryLike.Atom₁) (e_1 : Mathlib.Tactic.BicategoryLike.Mor₂)
  (η_1 : Mathlib.Tactic.BicategoryLike.WhiskerRight) (f_1 : Mathlib.Tactic.BicategoryLike.Atom₁),
  (Mathlib.Tactic.BicategoryLike.WhiskerRight.whisker e η f =
      Mathlib.Tactic.BicategoryLike.WhiskerRight.whisker e_1 η_1 f_1) =
    (e = e_1 ∧ η = η_1 ∧ f = f_1)