mxGraphHierarchyEdge.prototype.getGeneralPurposeVariable=function(a){return this.temp[a-this.minRank-1]};mxGraphHierarchyEdge.prototype.setGeneralPurposeVariable=function(a,b){this.temp[a-this.minRank-1]=b};mxGraphHierarchyEdge.prototype.getCoreCell=function(){return null!=this.edges&&0<this.edges.length?this.edges[0]:null};