code: public void setEnlisted(Xid enlistedXid)
     {
        if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) SibTr.entry(this, tc, "setEnlisted", enlistedXid);
        this.enlistedXid = enlistedXid;
        if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) SibTr.exit(this, tc, "setEnlisted");
     }
docs: This method is used internally to set whether we are currently enlisted. This is used in the
  case where a transaction is suspended as when this occurs the resource is effectively
  delisted (although this is never passed onto the server).
  <p>
  This call indicates which XId we are now currently enlisted against or null if we are being
  suspended (delisted).
  
  @see com.ibm.ws.sib.comms.client.BaseSIXAResourceProxy#setEnlisted(javax.transaction.xa.Xid)