private boolean addIgnoredSilently(@NotNull String url) {
    if (myStandardIgnoredResources.contains(url)) {
      return false;
    }

    if (myIgnoredResources.add(url)) {
      incModificationCount();
      return true;
    }
    else {
      return false;
    }
  }
private boolean addIgnoredSilently(@NotNull String url)