    # File lib/fog/linode/models/dns/zone.rb, line 56
            def save
              requires :domain, :type
              requires :email if type == 'master'
              options = {}
              # * options<~Hash>
              #   * refresh_sec<~Integer> numeric, default: '0'
              #   * retry_sec<~Integer> numeric, default: '0'
              #   * expire_sec<~Integer> numeric, default: '0'
              #   * status<~Integer> 0, 1, or 2 (disabled, active, edit mode), default: 1
              #   * master_ips<~String> When type=slave, the zone's master DNS servers list, semicolon separated
              options[:description] = description if description
              options[:soa_email]   = email if email
              options[:ttl_sec]     = ttl if ttl
              response = unless identity
                service.domain_create(domain, type, options)
              else
                options[:domain]  = domain if domain
                options[:type]    = type if type
                service.domain_update(identity, options)
              end
              merge_attributes(response.body['DATA'])
              true
            end