public void visit(mxGraphHierarchyNode parent,mxGraphHierarchyNode cell,mxGraphHierarchyEdge connectingEdge,int layer,int seen);

public void visit ( mxGraphHierarchyNode parent , mxGraphHierarchyNode cell , mxGraphHierarchyEdge connectingEdge , int layer , int seen ) ;
the method within which the visitor will perform operations upon the graph model
