instance method xml_out

# File activesupport/lib/active_support/vendor/xml-simple-1.0.11/xmlsimple.rb, line 212
  def xml_out(ref, options = nil)
    handle_options('out', options)
    if ref.instance_of?(Array)
      ref = { @options['anonymoustag'] => ref }
    end

    if @options['keeproot']
      keys = ref.keys
      if keys.size == 1
        ref = ref[keys[0]]
        @options['rootname'] = keys[0]
      end
    elsif @options['rootname'] == ''
      if ref.instance_of?(Hash)
        refsave = ref
        ref = {}
        refsave.each { |key, value|
          if !scalar(value)
            ref[key] = value
          else
            ref[key] = [ value.to_s ]
          end
        }
      end
    end

    @ancestors = []
    xml = value_to_xml(ref, @options['rootname'], '')
    @ancestors = nil

    if @options['xmldeclaration']
      xml = @options['xmldeclaration'] + "\n" + xml
    end

    if @options.has_key?('outputfile')
      if @options['outputfile'].kind_of?(IO)
        return @options['outputfile'].write(xml)
      else
        File.open(@options['outputfile'], "w") { |file| file.write(xml) }
      end
    end
    xml
  end