# File lib/rack/moneta_cookies.rb, line 38
    def initialize(app, options = {}, &block)
      @app, @pool = app, []
      if block
        raise ArgumentError, 'Use either block or options' unless options.empty?
        @builder = Moneta::Builder.new(&block)
      else
        @builder = Moneta::Builder.new { adapter :Cookie, options }
      end
    end