@ApiStatus.Internal
  protected Map<String, String> getNormalizedFiles2FilesMapping(ProjectData data) {
    final Map<String, String> normalizedFiles2Files = new HashMap<>();
    final Set<String> files = data.getClasses().keySet();
    for (final String file : files) {
      normalizedFiles2Files.put(normalizeFilePath(file), file);
    }
    return normalizedFiles2Files;
  }
@ApiStatus.Internal
  protected Map<String, String> getNormalizedFiles2FilesMapping(ProjectData data)