docs: private void addWorkListItemsForExtDir(LinkedList<WorkListItem> workList, String extDir) {
          File dir = new File(extDir);
          File[] fileList = dir.listFiles((FileFilter) pathname -> {
              String path = pathname.getPath();
              boolean isArchive = Archive.isArchiveFileName(path);
              return isArchive;
          });
          if (fileList == null) {
              return;
          }
  
          for (File archive : fileList) {
              addToWorkList(workList, new WorkListItem(classFactory.createFilesystemCodeBaseLocator(archive.getPath()), false,
                      ICodeBase.Discovered.IN_SYSTEM_CLASSPATH));
          }
      }