/**
  * @throws Exception
  * @author Klaus Meffert
  * @since 3.2
  */
 public void testRemoveNaturalSelector_3() throws Exception {
   Configuration conf = new Configuration();
   NaturalSelector selector = new BestChromosomesSelector(conf);
   conf.addNaturalSelector(selector, false);
   conf.removeNaturalSelectors(true);
   assertEquals(0, conf.getNaturalSelectors(true).size());
   assertEquals(0, conf.getNaturalSelectorsSize(true));
   assertEquals(1, conf.getNaturalSelectors(false).size());
   assertEquals(1, conf.getNaturalSelectorsSize(false));
 }