@Override
    protected long startAttempt(ConnectionStats stats) {
      return stats.startTxFailover();
    }
Indicates to the server that a transaction is failing over to this server. The server then
performs the necessary bootstrapping for the tx.

@since GemFire 6.6
geode-core/src/main/java/org/apache/geode/cache/client/internal/TXFailoverOp.java