@TestOnly
  public static void setForcedLanguageLevel(@NotNull Project project, @Nullable LanguageLevel languageLevel) {
    LanguageLevel.FORCE_LANGUAGE_LEVEL = languageLevel;
    PushedFilePropertiesUpdater.getInstance(project).pushAll(new PythonLanguageLevelPusher());
  }
@TestOnly
  public static void setForcedLanguageLevel(@NotNull Project project, @Nullable LanguageLevel languageLevel)