so using MSEProperties how does the system links AFFC to this method? afferentCoupling "Afferent coupling for a class group is the number of classes that depend upon this class group" <property: #AFFC longName: 'Afferent Coupling' description: 'Afferent Coupling of a class group'> | cgClasses cgTypes | cgClasses := self allClasses select: [:c | c isInstanceSide]. cgTypes := cgClasses flatCollect: [:c | c allRecursiveTypes]. ^ (cgClasses flatCollect: [:aClass | aClass invokingClasses select: [: c | (cgClasses contains: [:each | each = c]) not and: [(cgTypes contains: [:each | each = c]) not and: [c isInstanceSide]]]]) asSet size