# File lib/deltacloud/method_serializer.rb, line 56
    def cache_file_name(method_name, args)
      FileUtils.mkdir_p(cache_dir) unless File.directory?(cache_dir)
      method_name = $scenario_prefix ? "#{$scenario_prefix}_#{method_name}" : method_name
      File.join(cache_dir, "#{method_name}.#{args_hash(args)}")
    end