test cascad delet make sure depend element disappear test delet extens mechan factori em factori model extens mechan factori extens mechan helper em helper model extens mechan helper object model model model manag factori creat model model model manag factori set root model model object stereo em factori build stereotyp mystereo model object td em factori build tag definit td stereo object tv em factori build tag valu td tag valu object clazz model core factori build model em helper add tag valu clazz tv collect tv model facad tag valu collect clazz equal wrong number tag valu return tv size tag valu tv contain tv collect td model model manag helper model element kind model model meta type tag definit equal tag definit td size delet stereotyp cascad tag definit tag valu model uml factori delet stereo model pump flush model event tv model facad tag valu collect clazz equal tag valu delet tv size td model model manag helper model element kind model model meta type tag definit equal tag definit delet td size 