public static void updateParticipants(DLockService svc, TXLockId txLockId,
      Set updatedParticipants) {
    DLockGrantor grantor = null;
    try {
      grantor = DLockGrantor.waitForGrantor(svc);
      if (grantor != null) {
        try {
          TXLockBatch txb = (TXLockBatch) grantor.getLockBatch(txLockId);
          if (txb == null) {
            // we became grantor after the original grantor left
            // fixes bug 42656
            return;
          }
          txb.setParticipants(updatedParticipants);
          grantor.updateLockBatch(txLockId, txb);
        } catch (LockGrantorDestroyedException ignoreit) {
        }
      }
    } catch (InterruptedException e) {
      Thread.currentThread().interrupt();
    }
  }
Update the Grantor with a new set of Participants. This method is meant to be used in a local
context (does <b>NOT</b> involve any messaging)
geode-core/src/main/java/org/apache/geode/internal/cache/locks/TXLockUpdateParticipantsMessage.java