restored old behavior
diff --git a/impl/src/main/java/org/apache/myfaces/push/AbstractWebsocketComponent.java b/impl/src/main/java/org/apache/myfaces/push/AbstractWebsocketComponent.java
index 11fe792..4e46f12 100644
--- a/impl/src/main/java/org/apache/myfaces/push/AbstractWebsocketComponent.java
+++ b/impl/src/main/java/org/apache/myfaces/push/AbstractWebsocketComponent.java
@@ -44,6 +44,12 @@
         {

             return true;

         }

+

+        @Override

+        public boolean containsAll(Collection<?> c)

+        {

+            return true;

+        }

     });

 

     @JSFProperty