"\n"}e=this.model.getDirectedEdgeCount(b,!0,a);var f=this.model.getDirectedEdgeCount(c,!1,a);if(null!=this.multiplicities)for(var g=0;g<this.multiplicities.length;g++){var k=this.multiplicities[g].check(this,a,b,c,e,f);null!=k&&(d+=k)}k=this.validateEdge(a,b,c);null!=k&&(d+=k);return 0<d.length?d:null}return this.allowDanglingEdges?null:""};mxGraph.prototype.validateEdge=function(a,b,c){return null};