code: private static List<String> mapRawEditionToHumanReadable(String rawEdition) {
          List<String> result = editionsMap.get(rawEdition);
          return result != null ? result : Arrays.asList(EDITION_UNKNOWN);
      }
docs: Maps the raw (ie non-human-readable) name of an edition to the human readable name, or EDITION_UNMAPPED
  if the edition is known but should not be mapped to anything or "" if the edition is now known (ie an
  error case).