@Override
    public void decrement(@Nonnull UUID txnId) {
        decrement0(txnId, true);
    }
@Test
    public void null_uuid_does_not_decrement_counter() {
        long valueBefore = nodeWideUsedCapacityCounter.currentValue();
        counter.decrement(TxnReservedCapacityCounter.NULL_UUID);
        long valueAfter = nodeWideUsedCapacityCounter.currentValue();

        assertEquals(valueBefore, valueAfter);
    }