anchor.diff:  
       networking.vlans = mkOption {
         default = { };
  -      example = literalExample {
  -        vlan0 = {
  -          id = 3;
  -          interface = "enp3s0";
  -        };
  -        vlan1 = {
  -          id = 1;
  -          interface = "wlan0";
  -        };
  -      };
  +      example = literalExample ''
  +        {
  +          vlan0 = {
  +            id = 3;
  +            interface = "enp3s0";
  +          };
  +          vlan1 = {
  +            id = 1;
  +            interface = "wlan0";
  +          };
  +        }
  +      '';
         description =
           ''
             This option allows you to define vlan devices that tag packets
  
positive.code: 
      networking.sits = mkOption {
        default = { };
        example = literalExample {
          hurricane = {
            remote = "10.0.0.1";
            local = "10.0.0.22";
            ttl = 255;
          };
          msipv6 = {
            remote = "192.168.0.1";
            dev = "enp3s0";
            ttl = 127;
          };
        };
        description = ''
          This option allows you to define 6-to-4 interfaces which should be automatically created.
        '';
  
negative.code: 
      networking.wlanInterfaces = mkOption {
        default = { };
        example = literalExample ''
          {
            wlan-station0 = {
                device = "wlp6s0";
            };
            wlan-adhoc0 = {
                type = "ibss";
                device = "wlp6s0";
                mac = "02:00:00:00:00:01";
            };
            wlan-p2p0 = {
                device = "wlp6s0";
                mac = "02:00:00:00:00:02";
            };
            wlan-ap0 = {
                device = "wlp6s0";
                mac = "02:00:00:00:00:03";
            };
          }
        '';
        description =
          ''
            Creating multiple WLAN interfaces on top of one physical WLAN device (NIC).
  