public void destroy() {
    synchronized (TXLockService.class) {
      if (!isDestroyed()) {
        basicDestroy();
        if (this == DTLS) {
          DTLS = null;
        }
      }
    }
  }
Destroys this tx lock service and removes the static reference to it.
geode-core/src/main/java/org/apache/geode/internal/cache/locks/TXLockService.java