docs: public FileModel getChildFile(ArchiveModel archiveModel, String filePath)
      {
          filePath = FilenameUtils.separatorsToUnix(filePath);
          StringTokenizer stk = new StringTokenizer(filePath, "/");
  
          FileModel currentFileModel = archiveModel;
          while (stk.hasMoreTokens() && currentFileModel != null)
          {
              String pathElement = stk.nextToken();
  
              currentFileModel = findFileModel(currentFileModel, pathElement);
          }
          return currentFileModel;
      }