*public* *void* TreeNodeExpand(TreeNode node) {
*for* (*int* i = 0; i < node.getChildCount(); i++) {
*if* (!node.isChildLeaf(i)) {
TreeNodeExpand(node.setChildOpen(i, *true*));
}
}
}
*public* *void* TreeNodeCollapse(TreeNode node) {
*for* (*int* i = 0; i < node.getChildCount(); i++) {
*if* (!node.isChildLeaf(i)) {
TreeNodeExpand(node.setChildOpen(i, *false*));
}
}
}
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