def default_app_directories
      StatDirectory.from_list([
        %w(Controllers        app/controllers),
        %w(Helpers            app/helpers),
        %w(Models             app/models),
        %w(Mailers            app/mailers),
        %w(Javascripts        app/assets/javascripts),
        %w(Libraries          lib),
        %w(APIs               app/apis)
      ], @root)
    end
def default_app_directories
      StatDirectory.from_list([
        %w(Controllers        app/controllers),
        %w(Helpers            app/helpers),
        %w(Models             app/models),
        %w(Mailers            app/mailers),
        %w(Javascripts        app/assets/javascripts),
        %w(Libraries          lib),
        %w(APIs               app/apis)
      ], @root)
    end
What Rails expects