overrid set enclos fig fig enclos owner object nod owner enclos object comp enclos owner model facad compon instanc comp model facad compon instanc nod comp model common behavior helper set compon instanc nod comp set enclos fig enclos model facad node comp set enclos fig enclos enclos visibl visibl like delet todo indic fundament problem investig tfm model facad compon instanc nod model common behavior helper set compon instanc nod set enclos fig enclos layer element order figur collect content arrai list layer content object content fig edg model element fig edg model element figedg fig edg model element figedg layer bring figedg 