# File lib/sinatra/async.rb, line 140
      def async_runner(meth, *bargs)
        @aparams = @params.dup
        async_schedule do
          begin
            original, @params = @params, @aparams
            method(meth).arity == 0 ? send(meth) : send(meth, *bargs)
          ensure
            @params = original
          end
          nil
        end
      end