[PATCH] Add missing annotation

[Wald Commits]

# HG changeset patch
# User Tom Gottfried <tom at intevation.de>
# Date 1417111845 -3600
# Node ID efda43a6dfd27f9dfd856e8aca3a6c06bbd01f72
# Parent  95fd15ece1efb38e00034a07c18c849ae8a692d1
Add missing annotation.

diff -r 95fd15ece1ef -r efda43a6dfd2 artifacts/src/main/java/org/dive4elements/river/artifacts/services/RiverService.java
--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/services/RiverService.java	Thu Nov 27 17:46:37 2014 +0100
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/services/RiverService.java	Thu Nov 27 19:10:45 2014 +0100
@@ -37,7 +37,7 @@
     /** The log used in this service.*/
     private static Logger log = Logger.getLogger(RiverService.class);
 
-
+    @Override
     protected Document doProcess(
         Document      data,
         GlobalContext globalContext,