# File lib/active_resource/http_mock.rb, line 193
      def respond_to(*args) #:yields: mock
        pairs = args.first || {}
        reset! if args.last.class != FalseClass

        if block_given?
          yield Responder.new(responses)
        else
          delete_responses_to_replace pairs.to_a
          responses.concat pairs.to_a
          Responder.new(responses)
        end
      end