# File addon/buildr/jetty.rb, line 166
    def undeploy(url)
      use.invoke
      uri = URI.parse(url)
      Net::HTTP.start(uri.host, uri.port) do |http|
        response = http.request_post("/buildr/undeploy", "path=#{uri.path}")
        if Net::HTTPOK === response && response.body =~ /Undeployed/
          true
        else
          fail "Deployment failed: #{response}"
        end
      end
    end