@Override
  public Iterable<MeasureComputerWrapper> getMeasureComputers() {
    checkState(this.measureComputers != null, "Measure computers have not been initialized yet");
    return measureComputers;
  }
@Test
  public void get_measure_computers_throws_ISE_if_not_initialized() {
    assertThatThrownBy(() -> underTest.getMeasureComputers())
      .isInstanceOf(IllegalStateException.class)
      .hasMessage("Measure computers have not been initialized yet");
  }