src/share/classes/java/util/concurrent/RecursiveAction.java

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@@ -157,11 +157,13 @@
      * The main computation performed by this task.
      */
     protected abstract void compute();
 
     /**
-     * Always returns null.
+     * Always returns {@code null}.
+     *
+     * @return {@code null} always
      */
     public final Void getRawResult() { return null; }
 
     /**
      * Requires null completion value.