construct fig edg method creat element hold model element add listen stereotyp construct constructor intend us concret subclass param element own uml element param render set render set fig edg model element object element diagram set render set todo don set chang fig current just us set set diagram set render set set render set todo doesn matter set gef draw pixel wide line set line color line color set line width line width fig set line color line color fig set line width line width fig fig element rectangl render set stereotyp fig fig stereotyp group element rectangl set init fig init owner element 