public long getSuccessfulSyncCount() {
        final AtomicLong result = new AtomicLong();
        distroRecords.forEach((s, distroRecord) -> result.addAndGet(distroRecord.getSuccessfulSyncCount()));
        return result.get();
    }
@Test
    void testGetSuccessfulSyncCount() {
        long expected = DistroRecordsHolder.getInstance().getSuccessfulSyncCount() + 1;
        DistroRecordsHolder.getInstance().getRecord("testGetSuccessfulSyncCount").syncSuccess();
        assertEquals(expected, DistroRecordsHolder.getInstance().getSuccessfulSyncCount());
    }