    # File lib/fog/libvirt/requests/compute/update_display.rb, line 5
            def update_display(options = { })
              raise ArgumentError, "uuid is a required parameter" unless options.has_key? :uuid
              display          = { }
              display[:type]   = options[:type] || 'vnc'
              display[:port]   = (options[:port] || -1).to_s
              display[:listen] = options[:listen].to_s   if options[:listen]
              display[:passwd] = options[:password].to_s if options[:password]
              display[:autoport] = 'yes' if display[:port] == '-1'

              builder = Nokogiri::XML::Builder.new { graphics_ (display) }
              xml     = Nokogiri::XML(builder.to_xml).root.to_s

              client.lookup_domain_by_uuid(options[:uuid]).update_device(xml, 0)
              # if we got no exceptions, then we're good'
              true
            end