@Test
public void checkTwts() {

    assertTrue(TransformersValidation.INSTANCE.checkTransformer(transformer, strictConfig, NullWriter.NULL_WRITER));
    Mockito.when(bus.getV()).thenReturn(highV);
    assertFalse(TransformersValidation.INSTANCE.checkTransformer(transformer, strictConfig, NullWriter.NULL_WRITER));
}