code: @Override
      public boolean deregisterBucketTrx(IBucketReadTrx pTrx) throws TTIOException {
          if (pTrx instanceof IBucketWriteTrx) {
              mWriteTransactionUsed.set(false);
          }
          return mBucketTrxs.remove(pTrx);
      }
docs: {@inheritDoc}