tweak for demo
diff --git a/schema/yang-node-link.yang b/schema/yang-node-link.yang
new file mode 100644
index 0000000..1b93538
--- /dev/null
+++ b/schema/yang-node-link.yang
@@ -0,0 +1,5 @@
+module yang-node {
+  extension link {
+    argument name;
+  }
+}