public void ReplaceInterface(Implementation implementation, Classifier newInterface) =>
_interfaceImplementations.ReplaceInterface(implementation, newInterface);
public void AddInterfaceImplementation(Classifier newInterface,MessageSystem messageSystem = null)
{
// ensure that only one interface is created after this method was executed
// used to ensure a previous issue was fixed (two implementations were created instead of one)
Ensures(InterfaceImplementations.Count == OldValue(InterfaceImplementations.Count + 1));
var newImplementation = new Implementation(this, newInterface);
InterfaceImplementations.AddInterfaceToList(newImplementation);
messageSystem?.PublishCreated(InterfaceImplementations, newImplementation);
}