# File lib/deltacloud/method_serializer.rb, line 24
    def cache_dir
      storage_dir = $methods_cache_dir || File.join(File.dirname(__FILE__), 'cache')
      class_dir = self.class.name.split('::').last
      class_dir ||= self.class.name
      File.join(storage_dir, class_dir.downcase)
    end