@Override
    public Long answer(InvocationOnMock invocation) throws Throwable {
      System.out.println("### in FakeChannelWriteArrayBB.answer :");
      return fakeWriteArrayBB(bbArray);
    }
Testing recovery from failures writing OverflowOplog entries
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/OverflowOplogFlushTest.java