--- old/src/java.compiler/share/classes/javax/lang/model/element/UnknownAnnotationValueException.java	2017-01-31 00:24:32.762851890 -0800
+++ new/src/java.compiler/share/classes/javax/lang/model/element/UnknownAnnotationValueException.java	2017-01-31 00:24:32.658851887 -0800
@@ -79,7 +79,7 @@
     /**
      * Returns the additional argument.
      *
-     * @return the additional argument
+     * @return the additional argument, or {@code null} if unavailable
      */
     public Object getArgument() {
         return parameter;