def autoloadable_module?(path_suffix)
      autoload_paths.each do |load_path|
        return load_path if File.directory? File.join(load_path, path_suffix)
      end
      nil
    end
def autoloadable_module?(path_suffix)
      autoload_paths.each do |load_path|
        return load_path if File.directory? File.join(load_path, path_suffix)
      end
      nil
    end
Does the provided path_suffix correspond to an autoloadable module?
 Instead of returning a boolean, the autoload base for this module is
 returned.