anchor.diff:  -spec swift_model() -> maps:map().
   swift_model() ->
       #{
  +        %% The type of storage.
  +        type => {equal, <<"swift">>},
           %% The Id of storage.
           id => {string, optional},
           %% The name of storage.
  
positive.code: -spec cephrados_model() -> maps:map().
  cephrados_model() ->
      #{
          %% The Id of storage.
          id => {string, optional},
          %% The name of storage.
  
negative.code:         %% LUMA API Key, must be identical with API Key in external LUMA
          %% service.
          lumaApiKey => {string, optional},
          %% The URL to OpenStack Keystone identity service.
          authUrl => string,
          %% The name of the tenant to which the user belongs.
  