### Question:
TransformedBinaryFunction implements BinaryFunction<L, R, T> { public final T evaluate(L left, R right) { return helper.evaluate(left, right); } <X> TransformedBinaryFunction(BinaryFunction<? super L, ? super R, ? extends X> preceding,
            Function<? super X, ? extends T> following); final T evaluate(L left, R right); @Override final boolean equals(Object obj); @Override int hashCode(); @Override String toString();  }### Answer:
@Test public void testRun() { TransformedBinaryFunction<Integer, Integer, Integer> transform = new TransformedBinaryFunction<Integer, Integer, Integer>(new Sum(), new AddOne()); assertEquals(Integer.valueOf(4), transform.evaluate(1, 2)); }