code: private String getDefaultLanguage(List<String> applicationLanguages) {
          if (applicationLanguages.isEmpty()) {
              String NO_LANGUAGES_TEXT = "Please specify the supported languages in 'application.properties'."
                  + " For example 'application.languages=en, ro, de, pt-BR' makes 'en' your default language.";
  
              log.error(NO_LANGUAGES_TEXT);
              return "en";
          }
  
          // the first language specified is the default language
          return applicationLanguages.get(0);
      }
docs: Returns the default language as derived from PippoSettings.
  
  @param applicationLanguages
  @return the default language