@TestOnly
  public void release(@NotNull String localPath) {
    if (!ApplicationManager.getApplication().isUnitTestMode()) throw new IllegalStateException();
    var handler = myHandlers.remove(localPath);
    if (handler == null) throw new IllegalArgumentException(localPath + " not in " + myHandlers.keySet());
    handler.clearCaches();
  }
@TestOnly
  public void release(@NotNull String localPath)