action perform action event object target target manag instanc model target object ns model facad namespac target ns target model facad paramet target model facad behavior featur target target model facad behavior featur target model facad featur target model facad owner target target model facad owner target model facad event target ns model facad namespac target model facad classifi target ns model facad namespac target model facad associ end target target model facad associ target ns model facad namespac target object model core factori build enumer ns target manag instanc set target action perform 