Working on model annotations; still in progress.
diff --git a/core/api/src/main/java/org/onlab/onos/net/Description.java b/core/api/src/main/java/org/onlab/onos/net/Description.java
index 38338c1..8b5464b 100644
--- a/core/api/src/main/java/org/onlab/onos/net/Description.java
+++ b/core/api/src/main/java/org/onlab/onos/net/Description.java
@@ -3,5 +3,5 @@
 /**
  * Base abstraction of a piece of information about network elements.
  */
-public interface Description {
+public interface Description extends Annotated {
 }