* refactored @addPlugin@ to be fluent interface style

git-svn-id: svn+ssh://svn.synyx.de/var/svn/synyx/opensource/hera/trunk@8540 5a64d73e-33d6-4ccc-9058-23f8668ecac9

core/src/main/java/org/synyx/hera/core/MutablePluginRegistry.java

@@ -41,7 +41,7 @@ public interface MutablePluginRegistry<T extends Plugin<S>, S> extends
      * 
      * @param plugin
      */
-    void addPlugin(T plugin);
+    MutablePluginRegistry<T, S> addPlugin(T plugin);
 
 
     /**

core/src/main/java/org/synyx/hera/core/OrderAwarePluginRegistry.java

@@ -170,10 +170,11 @@ public class OrderAwarePluginRegistry<T extends Plugin<S>, S> extends
      * org.synyx.hera.core.PluginRegistry#addPlugin(org.synyx.hera.core.Plugin)
      */
     @Override
-    public void addPlugin(T plugin) {
+    public OrderAwarePluginRegistry<T, S> addPlugin(T plugin) {
 
         super.addPlugin(plugin);
         Collections.sort(getPlugins(), comparator);
+        return this;
     }
 
 

core/src/main/java/org/synyx/hera/core/SimplePluginRegistry.java

@@ -96,9 +96,10 @@ public class SimplePluginRegistry<T extends Plugin<S>, S> implements
      * org.synyx.hera.core.MutablePluginRegistry#addPlugin(org.synyx.hera.core
      * .Plugin)
      */
-    public void addPlugin(T plugin) {
+    public SimplePluginRegistry<T, S> addPlugin(T plugin) {
 
         this.plugins.add(plugin);
+        return this;
     }