# File lib/openstack/network/qos_policy.rb, line 37
    def update(options)
      data = JSON.generate(:policy => options)
      response = @connection.req("PUT", "/qos/policies/#{@id}", {:data => data})
      OpenStack::Exception.raise_exception(response) unless response.code.match(/^20.$/)
      populate(JSON.parse(response.body)["policy"])
    end