[JENKINS-53177] - Promote ConsoleAnnotatorAggregator to try to fix Anonymous complaint (#3598)

JENKINS-53177

core/src/main/java/hudson/console/ConsoleAnnotator.java

@@ -91,19 +91,10 @@ public abstract class ConsoleAnnotator<T> implements Serializable {
         return (ConsoleAnnotator)a;
     }
 
-    /**
-     * Bundles all the given {@link ConsoleAnnotator} into a single annotator.
-     */
-    public static <T> ConsoleAnnotator<T> combine(Collection<? extends ConsoleAnnotator<? super T>> all) {
-        switch (all.size()) {
-        case 0:     return null;    // none
-        case 1:     return  cast(all.iterator().next()); // just one
-        }
-
-        class Aggregator extends ConsoleAnnotator<T> {
+    private static final class ConsoleAnnotatorAggregator<T> extends ConsoleAnnotator<T> {
         List<ConsoleAnnotator<T>> list;
 
-            Aggregator(Collection list) {
+        ConsoleAnnotatorAggregator(Collection list) {
             this.list = new ArrayList<ConsoleAnnotator<T>>(list);
         }
 
@@ -125,7 +116,17 @@ public abstract class ConsoleAnnotator<T> implements Serializable {
             }
         }
     }
-        return new Aggregator(all);
+
+    /**
+     * Bundles all the given {@link ConsoleAnnotator} into a single annotator.
+     */
+    public static <T> ConsoleAnnotator<T> combine(Collection<? extends ConsoleAnnotator<? super T>> all) {
+        switch (all.size()) {
+        case 0:     return null;    // none
+        case 1:     return  cast(all.iterator().next()); // just one
+        }
+
+        return new ConsoleAnnotatorAggregator<T>(all);
     }
 
     /**