Javadoc.
diff --git a/src/main/java/org/apache/commons/configuration2/tree/TrackedNodeModel.java b/src/main/java/org/apache/commons/configuration2/tree/TrackedNodeModel.java
index 6bbc80c..94bb17e 100644
--- a/src/main/java/org/apache/commons/configuration2/tree/TrackedNodeModel.java
+++ b/src/main/java/org/apache/commons/configuration2/tree/TrackedNodeModel.java
@@ -215,7 +215,7 @@
      * associate tracked node. This has the side effect that this in any case
      * becomes detached.
      *
-     * @param resolver
+     * @param resolver the {@code NodeKeyResolver}.
      */
     @Override
     public void clear(final NodeKeyResolver<ImmutableNode> resolver)