code: public void parseClassificationsFiles(List<String> propertiesFiles) {
          if (isNotEmpty(propertiesFiles)) {
              for (String propertyFile : propertiesFiles) {
                  if (StringUtils.isNotEmpty(propertyFile)) {
                      processClassificationFile(propertyFile);
                  }
              }
          }
      }
docs: Parses passed properties files for classifications. These classifications within each file get added to the overview-features page as metadata.
  File and metadata order within the individual files are preserved when classifications are added.
  
  @param propertiesFiles
  property files to read