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, <<"glusterfs">>},
  
positive.code:         %% LUMA API Key, must be identical with API Key in external LUMA
          %% service.
          lumaApiKey => {string, optional},
          %% Minimum latency in milliseconds, which should be simulated for
          %% selected operations.
          latencyMin => {integer, optional},
  
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 URL to OpenStack Keystone identity service.
          authUrl => string,
          %% The name of the tenant to which the user belongs.
  