@NotNull
  private Set<String> getFileNamesToCreate() {
    final String name = getBaseName();
    final String suffix = getPropertiesFileSuffix();
    return ContainerUtil.map2Set(myLocalesModel.getItems(),
                                 locale -> name + (locale == PropertiesUtil.DEFAULT_LOCALE ? "" : ("_" + myLocaleSuffixes
                                   .getOrDefault(locale, locale.toString()))) + suffix);
  }
@NotNull
  private Set<String> getFileNamesToCreate()