@Nullable
  public PropertiesFile findPropertiesFile(@NotNull Module module,
                                           @NotNull String bundleName,
                                           @Nullable Locale locale) {
    List<PropertiesFile> propFiles = findPropertiesFiles(module, bundleName);
    if (locale != null) {
      for(PropertiesFile propFile: propFiles) {
        if (propFile.getLocale().equals(locale)) {
          return propFile;
        }
      }
    }

    // fallback to default locale
    for(PropertiesFile propFile: propFiles) {
      if (propFile.getLocale().getLanguage().length() == 0 || propFile.getLocale().equals(Locale.getDefault())) {
        return propFile;
      }
    }

    // fallback to any file
    if (!propFiles.isEmpty()) {
      return propFiles.get(0);
    }

    return null;
  }
@Nullable
  public PropertiesFile findPropertiesFile(@NotNull Module module,
                                           @NotNull String bundleName,
                                           @Nullable Locale locale)