private void respondWithTimeout() {
      if (logger.isTraceEnabled(LogMarker.DLS_VERBOSE)) {
        logger.trace(LogMarker.DLS_VERBOSE, "Request {} timed out; grantor status = {}", this,
            grantor.displayStatus(rThread, objectName));
      }
      response.responseCode = DLockResponseMessage.TIMEOUT;
      sendResponse();
    }
Callers must be synchronized on this
geode-core/src/main/java/org/apache/geode/distributed/internal/locks/DLockRequestProcessor.java