docs: public void addFile(String description, FileModel fileModel)
      {
          Map<FileModel, ProblemFileSummary> files = addDescription(description);
  
          if (files.containsKey(fileModel))
          {
              files.get(fileModel).addOccurrence();
          } else {
              files.put(fileModel, new ProblemFileSummary(fileModel, 1));
          }
      }