### Question:
IntervalMetricReader { public static Builder builder() { return new Builder(InternalState.builder()); } @SuppressWarnings("FutureReturnValueIgnored") private  IntervalMetricReader(InternalState internalState); void shutdown(); static Builder builder(); static Builder builderFromDefaultSources();  }### Answer:
@Test void configTest() { Map<String, String> options = new HashMap<>(); options.put("otel.imr.export.interval", "12"); IntervalMetricReader.Builder config = IntervalMetricReader.builder(); IntervalMetricReader.Builder spy = Mockito.spy(config); spy.fromConfigMap(options, ConfigTester.getNamingDot()); Mockito.verify(spy).setExportIntervalMillis(12); }