anchor.diff:  -spec get_env(Key :: atom()) -> term() | no_return().
   get_env(Env) ->
       oz_worker:get_env(Env).
  +
  +
  +-spec get_domain() -> binary().
  +get_domain() ->
  +    oz_worker:get_domain().
   
   
   -spec list_users(aai:auth()) -> {ok, [od_user:id()]} | {error, term()}.
  
positive.code:     create_space/3,
      create_space_support_token/2,
      get_space_protected_data/2,
      delete_space/2
  ]).
  
  
negative.code:     simulate_downtime/1,
      timestamp_seconds/0,
      get_env/1,
      get_domain/0,
  
      list_users/1,
      create_user/1,
  