partial void DeleteCelestialObjectEvent(CelestialObjectEvent instance);
 partial void UpdateCelestialObjectEvent(CelestialObjectEvent instance);
		private void detach_CelestialObjectEvents(CelestialObjectEvent entity)
		{
			this.SendPropertyChanging();
			entity.Event = null;
		}
 partial void InsertCelestialObjectEvent(CelestialObjectEvent instance);
		private void attach_CelestialObjectEvents(CelestialObjectEvent entity)
		{
			this.SendPropertyChanging();
			entity.CelestialObject = this;
		}