creat link base given port port point messag coordin instanc port point messag coordin instanc object instanc sequenc diagram draw messag edg class link support inherit doc tigri gef graph mutabl graph model connect object object overrid object connect object port object port object edg type connect port port edg type edg type comment edg connect port port edg type object edg object object object object object action model meta type messag equal edg type editor cur editor global cur editor mode manag mode manag cur editor mode manag mode mode mode manag hashtabl mode object action type action model meta type action equal action type port messag node port messag node object messag node port classifi role object messag node port classifi role action model common behavior factori creat action model meta type creat action equal action type port messag node port messag node object messag node port classifi role object messag node port classifi role action model common behavior factori creat creat action model meta type action equal action type port messag node port messag node object messag node port classifi role object messag node port classifi role action model common behavior factori creat action model meta type destroi action equal action type port messag node port messag node object messag node port classifi role object messag node port classifi role action model common behavior factori creat destroi action model meta type send action equal action type implement import sequenc diagram model meta type termin action equal action type implement object object action object associ role model collabor helper associ role object object associ role associ role model collabor factori build associ role object object object messag model collabor factori build messag interact associ role action model collabor helper set action messag action model core helper set namespac action collabor model collabor helper set sender messag object model common behavior helper set receiv messag object add edg messag edg messag defin log lp log granular type statement lp log local lp log local nest ifdef sequencediagram edg log debug incorrect edg endif edg 