code: @Override
      public Object initializeTransaction(long txid, Object prevMetadata, Object currMetadata)
      {
          if (logger.isDebugEnabled() == true)
          {
              String logFormat = "initializeTransaction : txid={0}, prevMetadata={1}, currMetadata={2}";
              logger.debug(MessageFormat.format(logFormat, txid, prevMetadata, currMetadata));
          }
  
          return null;
      }
docs: {@inheritDoc}