public void UnregisterCallback <TEventType>(EventCallback <TEventType> callback, TrickleDown useTrickleDown = TrickleDown.NoTrickleDown) where TEventType : EventBase <TEventType>, new() { if (m_CallbackRegistry != null) { m_CallbackRegistry.UnregisterCallback(callback, useTrickleDown); } GlobalCallbackRegistry.UnregisterListeners <TEventType>(this, callback); }