fixes from PR

Signed-off-by: Attila Mészáros <a_meszaros@apple.com>

Author: csviri

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/event/source/informer/InformerManager.java

@@ -256,6 +256,7 @@ public void addIndexers(Map<String, Function<R, List<String>>> indexers) {
     this.indexers.putAll(indexers);
   }
 
+  @Override
   public Stream<R> byIndexStream(String indexName, String indexKey) {
     return sources.values().stream().map(s -> s.byIndex(indexName, indexKey)).flatMap(List::stream);
   }

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/event/source/informer/ManagedInformerEventSource.java

@@ -356,11 +356,11 @@ private static <R extends HasMetadata> Predicate<R> filterResourceByNamespaceAnd
       String namespace, Predicate<R> predicate) {
     return r -> {
       if (namespace != null) {
-        var res =
-            Optional.of(r)
-                .map(rr -> namespace.equals(rr.getMetadata().getNamespace()))
-                .orElse(false);
-        if (!res) return false;
+        if (!Optional.of(r)
+            .map(rr -> Objects.equals(namespace, rr.getMetadata().getNamespace()))
+            .orElse(false)) {
+          return false;
+        }
       }
       if (predicate != null) {
         return predicate.test(r);