private void buildPackages() {
    Collection<File> files = new LinkedHashSet<>();
    for (final String myFilePath : myFilePaths) {
      files.add(new File(myFilePath));
    }
    GroupByPackages groupByPackages = new GroupByPackages(files);

    List<File> roots = groupByPackages.getRoots();
    addFiles(this, roots, files, groupByPackages, null);

  }
private void buildPackages()