@Test
  public void bindingSimpleInteger() {
    addKeys("foo.port=7070");
    bind("foo");

    assertEquals(7070, getTarget().getPort());
  }
  @Test
  public void bindingWithNonPublicSetter() {
    getTarget().setId("test");
    addKeys("foo.id=abc");
    bind("foo");

    assertEquals("should not have changed", "test", getTarget().getId());
  }