node_to_ns_unified
return ns_id_cmp(node_to_ns_unified(a)->ns_id, node_to_ns_unified(b)->ns_id);
const struct ns_common *ns = node_to_ns_unified(node);
return node_to_ns_unified(node);
ns = node_to_ns_unified(node);
ret = node_to_ns_unified(node);