protected synchronized void handleGrantorDestruction() {
      try {
        if (pendingRequests != null) {
          for (final Object pendingRequest : pendingRequests) {
            DLockRequestMessage request = (DLockRequestMessage) pendingRequest;
            request.respondWithNotGrantor();
          }
        }
      } finally {
        destroy();
      }
    }
Sends NOT_GRANTOR replies to every request waiting for this grant token and then destroys the
grant token.
<p>
Synchronizes on this grant token.
geode-core/src/main/java/org/apache/geode/distributed/internal/locks/DLockGrantor.java