overrid select make select object pstate owner select sel pstate model facad activ graph model facad state machin model facad contain pstate sel select action state select action state sel set incom button enabl collect out model facad outgo owner select action state sel set outgo button enabl out sel select state select state sel set incom button enabl collect out model facad outgo owner select state sel set outgo button enabl out sel 