config

# File activesupport/lib/active_support/configurable.rb, line 30
      def config
        @_config ||= if respond_to?(:superclass) && superclass.respond_to?(:config)
          superclass.config.inheritable_copy
        else
          # create a new "anonymous" class that will host the compiled reader methods
          Class.new(Configuration).new
        end
      end