anchor.diff:                               unit = CounterUnit,
                                callback=_}, Counter),
   
  -    otel_meter_server:force_flush(?DEFAULT_METER_PROVIDER),
  +    otel_meter_server:force_flush(?GLOBAL_METER_PROVIDER_REG_NAME),
   
       ?assertLastValueReceive(CounterName, CounterDesc, CounterUnit, [{5, #{<<"a">> => <<"b">>}}]),
   
  
positive.code:     ?assertEqual(ok, otel_counter:add(Counter, 4, #{<<"c">> => <<"b">>})),
      ?assertEqual(ok, otel_counter:add(Counter, 5, #{<<"c">> => <<"b">>})),
  
      otel_meter_server:force_flush(?DEFAULT_METER_PROVIDER),
  
      ?assertSumReceive(z_counter, <<"counter description">>, kb, [{11, #{<<"c">> => <<"b">>}}]),
  
  
negative.code:     ?assertEqual(ok, otel_histogram:record(Histogram, 44, #{<<"c">> => <<"b">>})),
      ?assertEqual(ok, otel_histogram:record(Histogram, 100, #{<<"c">> => <<"b">>})),
  
      otel_meter_server:force_flush(?GLOBAL_METER_PROVIDER_REG_NAME),
  
      receive
          {otel_metric, #metric{name=a_histogram,
  