@ApiStatus.Internal
  public @NotNull FilePageCacheLockFree pageCache() {
    if (newFilePageCache == null) {
      if (LOCK_FREE_PAGE_CACHE_ENABLED) {
        throw new UnsupportedOperationException(
          "lock-free FilePageCache is not available in this storageLockContext."
        );
      }
      throw new UnsupportedOperationException(
        "lock-free FilePageCache is not available: PageCacheUtils.ENABLE_LOCK_FREE_VFS=false."
      );
    }
    return newFilePageCache;
  }
@ApiStatus.Internal
  public @NotNull FilePageCacheLockFree pageCache()