mxCellRenderer.prototype.destroy=function(a){null!=a.shape&&(null!=a.text&&(a.text.destroy(),a.text=null),null!=a.overlays&&(a.overlays.visit(function(b,c){c.destroy()}),a.overlays=null),null!=a.control&&(a.control.destroy(),a.control=null),a.shape.destroy(),a.shape=null)};