overrid model chang properti chang event mee mee remov associ event own element equal mee properti mee sourc owner model element remov packag namespac fig repres model element diagram make sure enclos todo view fig repres model element remov diagram agre bob defin log lp log granular type statement lp log local nest statement log info enabl mee valu log info model facad mee old valu remov namespac model facad owner notic mee endif layer perspect layer layer perspect layer fig layer present mee old valu enclos fig remov enclos fig set enclos fig model chang mee 