--- old/src/share/classes/java/util/function/UnaryOperator.java	2012-11-26 17:53:09.883300393 -0800
+++ new/src/share/classes/java/util/function/UnaryOperator.java	2012-11-26 17:53:09.675300383 -0800
@@ -32,7 +32,10 @@
  *
  * @since 1.8
  */
-public interface UnaryOperator<T> {
+public interface UnaryOperator<T> extends Function<T, T> {
+
+    @Override
+    public default T apply(T operand) { return operate(operand); }
 
     /**
      * Returns the result of the operation upon the operand.