public void close() {
      if (senderPool != null && connection != null) {
        try {
          connection.close(false);
        } catch (Exception e) {
          logger.error("Error closing the connection used to wan-copy region entries");
        }
        senderPool.returnConnection(connection);
      }
      connection = null;
    }
It runs the actions to be done after a batch has been
sent: throw an interrupted exception if the operation was canceled and
adjust the rate of copying by sleeping if necessary.

@param startTime time at which the entries started to be copied
@param copiedEntries number of entries copied so far
@param maxRate maximum copying rate
geode-wan/src/main/java/org/apache/geode/management/internal/cli/functions/WanCopyRegionFunctionDelegate.java