Depreacte DurationFormatUtils 0-argument contructor

src/main/java/org/apache/commons/lang3/time/DurationFormatUtils.java

@@ -763,8 +763,12 @@ private static String paddedValue(final long value, final boolean padWithZeros,
      *
      * <p>This constructor is public to permit tools that require a JavaBean instance
      * to operate.</p>
+     *
+     * @deprecated TODO Make private in 4.0.
      */
+    @Deprecated
     public DurationFormatUtils() {
+        // empty
     }
 
 }