long getRefreshNanos() {
    return (refreshNanos == UNSET_INT) ? DEFAULT_REFRESH_NANOS : refreshNanos;
  }

  /**
   * Specifies a nanosecond-precision time source for this cache. By default, {@link
   * System#nanoTime} is used.
   *
   * <p>The primary intent of this method is to facilitate testing of caches with a fake or mock
   * time source.
   *
   * @return this {@code CacheBuilder} instance (for chaining)

HSPLokhttp3/internal/concurrent/TaskRunner$RealBackend;->execute(Lokhttp3/internal/concurrent/TaskRunner;Ljava/lang/Runnable;)V
HSPLokhttp3/internal/concurrent/TaskRunner$RealBackend;->nanoTime()J
HSPLokhttp3/internal/concurrent/TaskRunner$runnable$1;-><init>(Lokhttp3/internal/concurrent/TaskRunner;)V
HSPLokhttp3/internal/concurrent/TaskRunner$runnable$1;->run()V
HSPLokhttp3/internal/concurrent/TaskRunner;-><clinit>()V