你如何在Ruby中做多态？

module Polymorphic
  def self.included(base)
    base.extend ClassMethods
  end

  module ClassMethods
    def polymorphic_method
      "This is a polymorphic method in #{self.class.name}"
    end
  end
end

class MyClass
  include Polymorphic
end

class MyOtherClass
  include Polymorphic
end

puts MyClass.new.polymorphic_method # 输出 "This is a polymorphic method in MyClass"
puts MyOtherClass.new.polymorphic_method # 输出 "This is a polymorphic method in MyOtherClass"