# File lib/fog/zerigo/requests/dns/update_zone.rb, line 27
        def update_zone(zone_id, options = {})

          optional_tags= ''
          options.each { |option, value|
            case option
            when :default_ttl
              optional_tags+= "<default-ttl>#{value}</default-ttl>"
            when :ns_type
              optional_tags+= "<ns-type>#{value}</ns-type>"
            when :ns1
              optional_tags+= "<ns1>#{value}</ns1>"
            when :nx_ttl
              optional_tags+= "<nx-ttl type='interger'>#{value}</nx-ttl>"
            when :slave_nameservers
              optional_tags+= "<slave-nameservers>#{value}</slave-nameservers>"
            when :axfr_ips
              optional_tags+= "<axfr-ips>#{value}</axfr-ips>"
            when :custom_nameservers
              optional_tags+= "<custom-nameservers>#{value}</custom-nameservers>"
            when :custom_ns
              optional_tags+= "<custom-ns>#{value}</custom-ns>"
            when :hostmaster
              optional_tags+= "<hostmaster>#{value}</hostmaster>"
            when :notes
              optional_tags+= "<notes>#{value}</notes>"
            when :restrict_axfr
              optional_tags+= "<restrict-axfr>#{value}</restrict-axfr>"
            when :tag_list
              optional_tags+= "<tag-list>#{value}</tag-list>"
            end
          }
          
          request(
            :body     => %Q{<?xml version="1.0" encoding="UTF-8"?><zone>#{optional_tags}</zone>},
            :expects  => 200,
            :method   => 'PUT',
            :path     => "/api/1.1/zones/#{zone_id}.xml"
          )
        end