@Override
  public @Nullable String getMnemonicString(PopupFactoryImpl.ActionItem value) {
    if (value.digitMnemonicsEnabled()) {
      Character res = value.getMnemonicChar();
      return res != null ? res.toString() : null;
    }

    return MnemonicNavigationFilter.super.getMnemonicString(value);
  }
@Override
  public @Nullable String getMnemonicString(PopupFactoryImpl.ActionItem value)