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src/main/java/org/apache/commons/collections4/bag/TreeBag.java

@@ -130,10 +130,10 @@ public class TreeBag<E> extends AbstractMapBag<E> implements SortedBag<E>, Seria
     }
 
     /**
-     * Write the bag out using a custom routine.
+     * Serializes this object to an ObjectOutputStream.
      *
-     * @param out  the output stream
-     * @throws IOException if an error occurs while writing to the stream
+     * @param out the target ObjectOutputStream.
+     * @throws IOException thrown when an I/O errors occur writing to the target stream.
      */
     private void writeObject(final ObjectOutputStream out) throws IOException {
         out.defaultWriteObject();