empty = new NonNullParamProperty();
empty = new ParameterNullnessProperty();
	protected void setUp() throws Exception {		empty = new NonNullParamProperty();				nonEmpty = new NonNullParamProperty();		nonEmpty.setNonNull(11, true);		nonEmpty.setNonNull(25, true);				extremes = new NonNullParamProperty();		extremes.setNonNull(0, true);		extremes.setNonNull(31, true);	}