anchor.diff:  get_user_default_space(ReqParams) ->
       {RestAddress, Headers, Options} = ReqParams,
       Response = do_request(RestAddress ++ "/user/spaces/default", Headers, get, [], Options),
  -    [DefSpace] = get_body_val([spaceId], Response),
  -    DefSpace.
  +    Val = get_body_val([spaceId], Response),
  +    fetch_value_from_list(Val).
   
   create_space_for_user(SpaceName, ReqParams) ->
       {RestAddress, Headers, Options} = ReqParams,
  
positive.code:     Resp = do_request(RestAddress ++ Endpoint, Headers, Method, Body, Options),
      ?assertMatch(bad, check_status(Resp)),
      check_bad_requests(Endpoints, Method, Body, ReqParams).
      
negative.code:                 ++ binary_to_list(ID) ++ "/privileges",
              Headers, get, [], Options
          ),
      Val = get_body_val([privileges], Response),
      fetch_value_from_list(Val).
  
  set_space_privileges(UserType, SID, ID, Privileges, ReqParams) ->
      {RestAddress, Headers, Options} = ReqParams,
  