CountingSupplier countingCopy =
        (CountingSupplier) ((Suppliers.MemoizingSupplier<Integer>) copy).delegate;
    checkMemoize(countingCopy, copy);
  }

  public void testCompose() {
    Supplier<Integer> fiveSupplier =
        new Supplier<Integer>() {
          @Override
          public Integer get() {
            return 5;
          }
        };

    INSTANCE;

    @Override
    public String apply(String string) {
      return whitespace().trimFrom(string);
    }
  }

  public void testCompose() {
    Function<String, String> trim = TrimStringFunction.INSTANCE;
    Predicate<String> equalsFoo = Predicates.equalTo("Foo");
    Predicate<String> equalsBar = Predicates.equalTo("Bar");