mxSwimlaneLayout.prototype.findRoots=function(a,b){var c=[];if(null!=a&&null!=b){var d=this.graph.model,e=null,f=-1E5,g;for(g in b){var k=b[g];if(null!=k&&d.isVertex(k)&&this.graph.isCellVisible(k)&&d.isAncestor(a,k)){for(var l=this.getEdges(k),m=0,n=0,p=0;p<l.length;p++){var q=this.getVisibleTerminal(l[p],!0);q==k?(q=this.getVisibleTerminal(l[p],!1),d.isAncestor(a,q)&&m++):d.isAncestor(a,q)&&n++}0==n&&0<m&&c.push(k);l=m-n;l>f&&(f=l,e=k)}}0==c.length&&null!=e&&c.push(e)}return c};