class Module
  def alias_method_chain(target, feature)
    with_method, without_method = "#{target}_with_#{feature}", "#{target}_without_#{feature}"

    alias_method without_method, target
    alias_method target, with_method

    case
    when public_method_defined?(without_method)
      public target
    when protected_method_defined?(without_method)
      protected target
    when private_method_defined?(without_method)
      private target
    end
  end
end