### Question:
DeleteFeaturePropertiesLiveCommandImpl extends
        AbstractModifyLiveCommand<DeleteFeaturePropertiesLiveCommand, DeleteFeaturePropertiesLiveCommandAnswerBuilder> implements DeleteFeaturePropertiesLiveCommand { @Nonnull @Override public String toString() { return getClass().getSimpleName() + "[" + super.toString() + "]"; } private  DeleteFeaturePropertiesLiveCommandImpl(final DeleteFeatureProperties command); @Nonnull static DeleteFeaturePropertiesLiveCommandImpl of(final Command<?> command); @Override String getFeatureId(); @Override Category getCategory(); @Override DeleteFeaturePropertiesLiveCommand setDittoHeaders(final DittoHeaders dittoHeaders); @Override boolean changesAuthorization(); @Nonnull @Override DeleteFeaturePropertiesLiveCommandAnswerBuilder answer(); @Nonnull @Override String toString();  }### Answer:
@Test public void toStringReturnsExpected() { assertThat(underTest.toString()) .contains(underTest.getClass().getSimpleName()) .contains("command=") .contains(twinCommand.toString()); }