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