mxGraph.prototype.setAllowNegativeCoordinates=function(a){this.allowNegativeCoordinates=a};mxGraph.prototype.getOverlap=function(a){return this.isAllowOverlapParent(a)?this.defaultOverlap:0};mxGraph.prototype.isAllowOverlapParent=function(a){return!1};mxGraph.prototype.getFoldableCells=function(a,b){return this.model.filterCells(a,mxUtils.bind(this,function(c){return this.isCellFoldable(c,b)}))};