}

  /**
   * Fails compilation if the signature of min and max is changed to take {@code Comparator<T>}
   * instead of {@code Comparator<? super T>}.
   */
  public void testMinMaxWithSupertypeComparator() {
    Comparator<Number> numberComparator =
        // Can't use Comparator.comparing(Number::intValue) due to Java 7 compatibility.
        new Comparator<Number>() {
          @Override

  }

  /**
   * Fails compilation if the signature of min and max is changed to take {@code Comparator<T>}
   * instead of {@code Comparator<? super T>}.
   */
  public void testMinMaxWithSupertypeComparator() {
    Comparator<Number> numberComparator =
        // Can't use Comparator.comparing(Number::intValue) due to Java 7 compatibility.
        new Comparator<Number>() {
          @Override