mxConnectionHandler.prototype.destroy=function(){this.graph.removeMouseListener(this);null!=this.shape&&(this.shape.destroy(),this.shape=null);null!=this.marker&&(this.marker.destroy(),this.marker=null);null!=this.constraintHandler&&(this.constraintHandler.destroy(),this.constraintHandler=null);null!=this.changeHandler&&(this.graph.getModel().removeListener(this.changeHandler),this.graph.getView().removeListener(this.changeHandler),this.changeHandler=null);null!=this.drillHandler&&(this.graph.removeListener(this.drillHandler),