code: public boolean close() throws TTIOException {
          if (!mClose) {
              mSession.deregisterBucketTrx(this);
              mBucketReader.close();
              mClose = true;
              return true;
          } else {
              return false;
          }
  
      }
docs: Closing this Readtransaction.
  
  @throws TTIOException
  if the closing to the persistent storage fails.