unpack_slice! (Merb::Slices::ModuleMixin)

    # File lib/merb-slices/module_mixin.rb, line 331
          def unpack_slice!
            app_slice_root = app_dir_for(:root)
            copied, duplicated = mirror_public!
            manifest.each do |source, relative_path|
              next unless unpack_file?(relative_path)
              mirror_file(source, app_slice_root / relative_path, copied, duplicated)
            end
            [copied, duplicated]
          end