xbc_node_for_each_subkey
xbc_node_for_each_subkey(hnode, node) {
xbc_node_for_each_subkey(hnode, node) {
xbc_node_for_each_subkey(node, gnode) {
xbc_node_for_each_subkey(gnode, enode) {
xbc_node_for_each_subkey(node, inode) {