@Override
  public String toString() {
    return "TXStateProxyImpl@" + System.identityHashCode(this) + " txId:"
        + txId + " realDeal:" + realDeal + " isJTA:"
        + isJTA;
  }
if there is local txstate, return it
geode-core/src/main/java/org/apache/geode/internal/cache/TXStateProxyImpl.java