{α : Type u_4} →
  {β : Type u_5} →
    {A : SimpleGraph α} →
      {B : SimpleGraph β} →
        {motive : A.Copy B → Sort u} →
          (t : A.Copy B) →
            ((toHom : A →g B) →
                (injective' : Function.Injective ⇑toHom) → motive { toHom := toHom, injective' := injective' }) →
              motive t