# File lib/sinatra/rack_accept.rb, line 53
        def self.included(klass)
          klass.class_eval do
            alias :content_type_without_save :content_type
            def content_type(*args)
              content_type_without_save *args
              request.env['rack-accept.formats'] = { args.first.to_sym => 1 }
              response['Content-Type']
            end
          end
        end