diff --git a/src/test/resources/hierarchicalinterfiletype/ietf-network-topology.yang b/src/test/resources/hierarchicalinterfiletype/ietf-network-topology.yang
new file mode 100644
index 0000000..6e9dfb7
--- /dev/null
+++ b/src/test/resources/hierarchicalinterfiletype/ietf-network-topology.yang
@@ -0,0 +1,17 @@
+ module ietf-network-topology {
+   yang-version 1;
+   namespace "urn:ietf:params:xml:ns:yang:ietf-network-topology";
+   prefix nt;
+
+   import ietf-inet-types {
+     prefix inet;
+   }
+   import ietf-network {
+     prefix nd;
+   }
+         leaf source-node {
+           type nd:node-id;
+           description
+             "Source node identifier, must be in same topology.";
+         }
+ }