用于快速和脏的XML序列化的Ruby代码？

require 'nokogiri'

class Person
  attr_accessor :name, :age

  def initialize(name, age)
    @name = name
    @age = age
  end
end

person = Person.new('John Doe', 30)

builder = Nokogiri::XML::Builder.new do |xml|
  xml.person do
    xml.name_ person.name
    xml.age_ person.age
  end
end

puts builder.to_xml