anchor.diff:  -spec provider_configuration_details_oneprovider_model() -> maps:map().
   provider_configuration_details_oneprovider_model() ->
       #{
  -        %% The name of a provider. Null if not registered.
  +        %% The name of a provider. `null` if not registered.
           name => string,
           %% True if all steps of cluster deployment and configuration have been
           %% performed.
  
positive.code: -spec oz_configuration_model() -> maps:map().
  oz_configuration_model() ->
      #{
          %% The Id of cluster record for this cluster. Null if the cluster is not
          %% registered.
          clusterId => string,
          %% Version of this Onepanel
          version => string,
  
negative.code:         deployed => boolean,
          %% Indicates that this is Onezone's panel.
          serviceType => {equal, <<"onezone">>},
          %% The domain of this Onezone cluster. `null` before cluster
          %% is configured.
          zoneDomain => string,
          %% The name of this Onezone cluster. `null` before cluster is
          %% configured.
          zoneName => {string, optional}
      }.
  
  