/// <summary>
 /// Adds a OfferingWithFacility to the collection.
 /// </summary>
 /// <param name="offeringWithFacility">The offeringWithFacility to add.</param>
 public void Add(OfferingWithFacility offeringWithFacility)
 {
     //offeringWithFacility.Owner = this;
     List.Add(offeringWithFacility);
 }
 /// <summary>
 /// Removes OfferingWithFacility from the collection.
 /// </summary>
 /// <param name="offeringWithFacility">The offeringWithFacility to remove.</param>
 public void Remove(OfferingWithFacility offeringWithFacility)
 {
     List.Remove(offeringWithFacility);
 }