  @Test(expected = IllegalArgumentException.class)
  public void When_Not_Return_Observable_Throw_Exception() throws NoSuchMethodException {

    Method mockMethod = io.rx_cache2.internal.ProvidersRxCache.class.getDeclaredMethod(
        "getMockWithoutReturnObservable");
    proxyTranslatorUT.processMethod(mockMethod, dataMethod);
  }