test creation support diagram type test creat remov object model model model manag factori creat model diagram set set diagram set diagram type type diagram type valu argo diagram diagram type diagram type state object context model core factori build model object machin model state machin factori build state machin context diagram diagram factori instanc creat type machin set type diagram type collabor type diagram type sequenc object collab model collabor factori build collabor model diagram diagram factori instanc creat type collab set type diagram type activ object context model core factori build model object activ graph model activ graph factori build activ graph context diagram diagram factori instanc creat type activ graph set handl simpl case exot fail clue test need extend diagram diagram factori instanc creat type model set diagram diagram factori instanc remov diagram diagram model uml factori delet model 