check test core element illeg model element connect except build connect fail test build connect illeg model element connect except object model uml factori build node model meta type uml object model uml factori build node model meta type model core helper set namespac object model uml factori build node model meta type uml object model uml factori build node model meta type model core helper set namespac object assoc model uml factori build connect model meta type associ model aggreg kind composit model aggreg kind associ namespac model facad namespac assoc end navig model facad navig model facad associ end assoc model facad navig model facad associ end assoc 