set model element contain object handl object contain em warn chang implement method warn sequenc tree doe matter em notab set namespac method level tree handl partit contain activ graph partit handl set activ graph activ graph contain handl model element contain partit partit contain content add model element handl handl constraint contain stereotyp stereotyp contain stereotyp constraint add constraint handl handl interact contain collabor interact handl set context collabor contain handl element resid contain compon contain element resid er element resid handl er set contain compon contain handl attribut link contain instanc attribut link handl set instanc instanc contain handl messag contain interact messag handl set interact interact contain handl link end contain link link end handl set link link contain handl attribut link contain link end attribut link handl set link end link end contain handl tag valu contain stereotyp tag valu handl stereotyp clear tag valu handl stereotyp add stereotyp contain handl tag valu contain model element tag valu handl set model element model element contain handl state vertex contain composit state state vertex handl set contain composit state contain handl element contain uml element handl set uml uml contain handl transit contain state state contain intern transit add transit handl handl state contain state machin state handl set state machin state machin contain handl transit contain state machin transit handl set state machin state machin contain handl action contain transit transit contain set effect action handl handl guard contain transit guard handl set transit transit contain handl model element contain namespac model element handl set namespac namespac contain illeg argument except handl handl contain contain 