@Override
  public long getLargestWorkerCount() {
    return asyncExecutionMonitoring.getLargestWorkerCount();
  }
@Test
  public void getLargestWorkerCount_delegates_to_AsyncExecutionMonitoring() {
    when(asyncExecutionMonitoring.getLargestWorkerCount()).thenReturn(12);

    assertThat(underTest.getLargestWorkerCount()).isEqualTo(12);

    verify(asyncExecutionMonitoring).getLargestWorkerCount();
  }