436         if (groupnodes.get(n).getChildren() == null) {  in writeSamplesNavTree()
440           Collections.sort(groupnodes.get(n).getChildren(), byLabel);  in writeSamplesNavTree()
470         if (groupnodes.get(i).getChildren() == null) {  in appendNodeGroups()
474           groupnodes.get(i).getChildren().add(gNode);  in appendNodeGroups()
517           (list.get(i).getChildren().get(0).getChildren() != null)) {  in squashNodes()
519         String childLabel =  list.get(i).getChildren().get(0).getLabel();  in squashNodes()
522         list.get(i).setChildren(list.get(i).getChildren().get(0).getChildren());  in squashNodes()
627           if (isChild == true && list.get(i).getChildren() != null) {  in renderGroupNodesTOCYaml()
647           if (list.get(i).getChildren() != null) {  in renderGroupNodesTOCYaml()
666           if (list.get(i).getChildren() == null) {  in renderGroupNodesTOC()
694           if (list.get(i).getChildren() == null) {  in renderProjectNodesTOC()
722           if (list.get(i).getChildren() == null) {  in renderChildrenToc()
771     public List<Node> getChildren() {  in getChildren()  method in SampleCode.Node