protected void handleRetryInformation(final byte[] retryMessage) {
    getLogger().debug("Got RETRY message: " + new String(retryMessage)
      + ", but not handled.");
  }
Optionally handle retry (NOT_MY_VBUKET) responses.

This method can be overridden in subclasses to handle the content
of the retry message appropriately.

@param retryMessage the body of the retry message.
src/main/java/net/spy/memcached/MemcachedConnection.java