if (child.getModel() instanceof IActionElement
|| child.getModel() instanceof IExceptionHandler
|| child.getModel() instanceof IAttributeMapper) {
if (i + 1 < children.size()) {
// insert dummy edges
Edge e = new Edge((Node) map.get(child), (Node) map
.get(getChildren().get(i + 1)));
e.weight = 1;
graph.edges.add(e);
map.put(this.toString() + i, e);
}