anchor.diff:          %% LUMA API Key, must be identical with API Key in external LUMA
           %% service.
           lumaApiKey => {string, optional},
  +        %% Map with key-value pairs used for describing QoS requirements.
  +        %% Overrides all previously set parameters.
  +        qosParameters => {#{'_' => string}, optional},
           %% Type of the modified storage. Must match the type of existing
           %% storage, needed only for OpenAPI polymorphism disambiguation.
           type => {equal, <<"swift">>},
  
positive.code:         %% LUMA API Key, must be identical with API Key in external LUMA
          %% service.
          lumaApiKey => {string, optional},
          %% The absolute path to the directory where the POSIX storage is mounted
          %% on the cluster nodes.
          mountPoint => string,
  
negative.code:         %% LUMA API Key, must be identical with API Key in external LUMA
          %% service.
          lumaApiKey => {string, optional},
          %% Map with key-value pairs used for describing QoS requirements.
          qosParameters => {#{'_' => string}, {optional, #{}}},
          %% The hostname of a machine where S3 storage is installed.
          hostname => string,
          %% The storage bucket name.
  