RetrieveAttributesLiveCommandImpl extends AbstractQueryLiveCommand<RetrieveAttributesLiveCommand,
        RetrieveAttributesLiveCommandAnswerBuilder> implements RetrieveAttributesLiveCommand { @Nonnull @Override public RetrieveAttributesLiveCommandAnswerBuilder answer() { return RetrieveAttributesLiveCommandAnswerBuilderImpl.newInstance(this); } private  RetrieveAttributesLiveCommandImpl(final RetrieveAttributes command); @Nonnull static RetrieveAttributesLiveCommandImpl of(final Command<?> command); @Override RetrieveAttributesLiveCommand setDittoHeaders(final DittoHeaders dittoHeaders); @Nonnull @Override RetrieveAttributesLiveCommandAnswerBuilder answer(); @Nonnull @Override String toString();  }
@Test public void answerReturnsNotNull() { assertThat(underTest.answer()).isNotNull(); }