Return Set instead of collection.

1 files changed, 1 insertions, 1 deletions

diff --git a/container-core/src/main/java/com/yahoo/container/core/config/HandlersConfigurerDi.java b/container-core/src/main/java/com/yahoo/container/core/config/HandlersConfigurerDi.java
index f2620cc8baa..e2f97c9ad6b 100644
--- a/container-core/src/main/java/com/yahoo/container/core/config/HandlersConfigurerDi.java
+++ b/container-core/src/main/java/com/yahoo/container/core/config/HandlersConfigurerDi.java
@@ -104,7 +104,7 @@ public class HandlersConfigurerDi {
         }
 
         @Override
-        public Collection<Bundle> completeBundleGeneration(GenerationStatus status) {
+        public Set<Bundle> completeBundleGeneration(GenerationStatus status) {
             return applicationBundleLoader.completeGeneration(status);
         }
     }