anchor.diff:  -spec dns_check_result_model() -> maps:map().
   dns_check_result_model() ->
       #{
  -        %% An interpretation of results obtained from DNS check. Possible values
  +        %% An interpreation of results obtained from DNS check. Possible values
           %% are: 'unresolvable' - query returned empty results;
           %% 'missing_records' - only some of the expected results were
           %% returned; 'bad_records' - none of the expected results were
  
positive.code: -spec dns_check_configuration_model() -> maps:map().
  dns_check_configuration_model() ->
      #{
          %% A collection of IP addresses for DNS servers used in checking DNS. If
          %% empty, local system configuration will be used.
          dnsServers => {[string], optional},
          %% If true, DNS check will verify that control of DNS zone for
          %% Onezone's domain was delegated to the DNS server built into
          %% Onezone service. This option is available only in Onezone service.
          builtInDnsServer => {boolean, optional},
  
negative.code:     }.
  
  %%--------------------------------------------------------------------
  %% @doc The zone deployment configuration.
  %% @end
  %%--------------------------------------------------------------------
  -spec zone_configuration_model() -> maps:map().
  