code: public void findSourceFiles(Set<String> suffixes,
                                  Map<String, Source> foundFiles,
                                  Map<String, Module> foundModules,
                                  Module currentModule,
                                  boolean permitSourcesInDefaultPackage,
                                  boolean inLinksrc)
                                          throws IOException {
          try {
              Source.scanRoot(path.toFile(),
                              suffixes,
                              excludes,
                              includes,
                              foundFiles,
                              foundModules,
                              currentModule,
                              permitSourcesInDefaultPackage,
                              false,
                              inLinksrc);
          } catch (ProblemException e) {
              e.printStackTrace();
          }
      }
docs: Finds all files with the given suffix that pass the include / exclude
  filters in this source location.
  
  @param suffixes The set of suffixes to search for
  @param foundFiles The map in which to store the found files
  @param foundModules The map in which to store the found modules
  @param currentModule The current module
  @param permitSourcesInDefaultPackage true if sources in default package
  are to be permitted
  @param inLinksrc true if in link source