anchor.diff:  updated_user_with_present_space_triggers_file_meta_creation3(Config) ->
       UpdateFun = fun(Node, S1, U1, P1, Priv1, _G1) ->
           push_update(Node, [
  -            update(1, [<<"r2">>, <<"r1">>], U1, user(<<"onedata">>, [], []))
  +            update(1, [<<"r2">>, <<"r1">>], U1, user(<<"onedata">>, [], [], undefined))
           ]),
           expect_message([U1], 1, []),
   
  
positive.code:                 <<"space_name">>, [], [], [{P1, 1000}]
              )),
              update(2, [<<"r2">>, <<"r1">>], P1, provider(<<"diginet rulz">>)),
              update(3, [<<"r2">>, <<"r1">>], U1, user(<<"onedata">>, [], [])),
              update(4, [<<"r2">>, <<"r1">>], G1, group(<<"onedata_gr">>, [S1], []))
          ]),
          expect_message([U1], 4, []),
  
negative.code:             update(4, [<<"r2">>, <<"r1">>], S1, space(
                  <<"space_name">>, [{U1, Priv1}], [], [{P1, 1000}]
              )),
              update(5, [<<"r3">>, <<"r2">>, <<"r1">>], U1, user(<<"onedata">>, [], [S1], S1))
          ]),
          expect_message([U1], 5, [])
      end,
  