@Test
  public void testSyncBit() throws Exception {
    doSyncBitTest(true);
    doSyncBitTest(false);
    doSyncBitTest(true);
  }
Make sure that if diskWriteAttributes sets sync then it shows up in the new apis.
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/DiskOldAPIsJUnitTest.java