to_xml

# File activesupport/lib/active_support/core_ext/array/conversions.rb, line 52
        def to_xml(options = {})
          raise "Not all elements respond to to_xml" unless all? { |e| e.respond_to? :to_xml }

          options[:root]     ||= all? { |e| e.is_a?(first.class) && first.class.to_s != "Hash" } ? first.class.to_s.underscore.pluralize : "records"
          options[:children] ||= options[:root].singularize
          options[:indent]   ||= 2
          options[:builder]  ||= Builder::XmlMarkup.new(:indent => options[:indent])

          root     = options.delete(:root).to_s
          children = options.delete(:children)

          if !options.has_key?(:dasherize) || options[:dasherize]
            root = root.dasherize
          end

          options[:builder].instruct! unless options.delete(:skip_instruct)

          opts = options.merge({ :root => children })

          xml = options[:builder]
          if empty?
            xml.tag!(root, options[:skip_types] ? {} : {:type => "array"})
          else
            xml.tag!(root, options[:skip_types] ? {} : {:type => "array"}) {
              yield xml if block_given?
              each { |e| e.to_xml(opts.merge!({ :skip_instruct => true })) }
            }
          end
        end