RetrieveFeaturesLiveCommandImpl extends AbstractQueryLiveCommand<RetrieveFeaturesLiveCommand,
        RetrieveFeaturesLiveCommandAnswerBuilder> implements RetrieveFeaturesLiveCommand { @Nonnull @Override public String toString() { return getClass().getSimpleName() + "[" + super.toString() + "]"; } private  RetrieveFeaturesLiveCommandImpl(final RetrieveFeatures command); @Nonnull static RetrieveFeaturesLiveCommandImpl of(final Command<?> command); @Override RetrieveFeaturesLiveCommand setDittoHeaders(final DittoHeaders dittoHeaders); @Nonnull @Override RetrieveFeaturesLiveCommandAnswerBuilder answer(); @Nonnull @Override String toString();  }
@Test public void toStringReturnsExpected() { assertThat(underTest.toString()) .contains(underTest.getClass().getSimpleName()) .contains("command=") .contains(retrieveFeaturesTwinCommand.toString()); }