private bool hasExtraInformation(PropertySetEvent setEvent, HashSet <Concept2> definedConcepts, BeamGenerator generator) { var instance = setEvent.Target.Instance; if (instance == null) { return(false); } return (definedConcepts.Contains(setEvent.Target.Property) && definedConcepts.Contains(setEvent.Target.Instance.Concept) && generator.IsKnownPropertyOf(setEvent.Target.Instance, setEvent.Target.Property) ); }