@Test
public void testDataNodeFeature() {

  final LayoutFeature first = DataNodeLayoutVersion.Feature.FIRST_LAYOUT; 
  assertTrue(DataNodeLayoutVersion.supports(LAST_NON_RESERVED_COMMON_FEATURE,
      first.getInfo().getLayoutVersion()));
  assertEquals(LAST_COMMON_FEATURE.getInfo().getLayoutVersion() - 1,
      first.getInfo().getLayoutVersion());
}