anchor.diff:      };
   to_json(?ERROR_SPACE_ALREADY_SUPPORTED_WITH_IMPORTED_STORAGE(SpaceId, StorageId)) ->
       #{
  -        <<"id">> => <<"spaceAlreadySupportedByImportedStorage">>,
  +        <<"id">> => <<"spaceAlreadySupportedWithImportedStorage">>,
           <<"details">> => #{
               <<"spaceId">> => SpaceId,
               <<"storageId">> => StorageId
           },
  -        <<"description">> => ?FMT("Space ~p is already supported by imported storage ~p.", [SpaceId, StorageId])
  +        <<"description">> => ?FMT("Space ~p is already supported with an imported storage ~p.", [SpaceId, StorageId])
       };
   
   %%--------------------------------------------------------------------
  
positive.code:     ChId :: gri:entity_id(),
      ParType :: gri:entity_type(),
      ParId :: gri:entity_id()
  }.
  
  -type op_worker() :: user_not_supported | auto_cleaning_disabled
  | file_popularity_disabled
  
negative.code:     ChTypeAtom = gri:deserialize_type(ChType),
      ParTypeAtom = gri:deserialize_type(ParType),
      ?ERROR_RELATION_ALREADY_EXISTS(ChTypeAtom, ChId, ParTypeAtom, ParId);
  from_json(#{<<"id">> := <<"spaceAlreadySupportedWithImportedStorage">>, <<"details">> := #{
      <<"spaceId">> := SpaceId, <<"storageId">> := StorageId}
  }) ->
      ?ERROR_SPACE_ALREADY_SUPPORTED_WITH_IMPORTED_STORAGE(SpaceId, StorageId);
  