RetrieveFeaturePropertiesLiveCommandImpl extends AbstractQueryLiveCommand<RetrieveFeaturePropertiesLiveCommand,
        RetrieveFeaturePropertiesLiveCommandAnswerBuilder> implements RetrieveFeaturePropertiesLiveCommand { @Nonnull @Override public RetrieveFeaturePropertiesLiveCommandAnswerBuilder answer() { return RetrieveFeaturePropertiesLiveCommandAnswerBuilderImpl.newInstance(this); } private  RetrieveFeaturePropertiesLiveCommandImpl(final RetrieveFeatureProperties command); @Nonnull static RetrieveFeaturePropertiesLiveCommandImpl of(final Command<?> command); @Override String getFeatureId(); @Override RetrieveFeaturePropertiesLiveCommand setDittoHeaders(final DittoHeaders dittoHeaders); @Nonnull @Override RetrieveFeaturePropertiesLiveCommandAnswerBuilder answer(); @Nonnull @Override String toString();  }
@Test public void answerReturnsNotNull() { assertThat(underTest.answer()).isNotNull(); }