private SimpleTypeConstraint(ConstraintVariable left, ConstraintVariable right, ConstraintOperator operator) {
SimpleTypeConstraint(ConstraintVariable left, ConstraintVariable right, ConstraintOperator operator) {
	private SimpleTypeConstraint(ConstraintVariable left, ConstraintVariable right, ConstraintOperator operator) {		Assert.isNotNull(left);		Assert.isNotNull(right);		Assert.isNotNull(operator);		fLeft= left;		fRight= right;		fOperator= operator;	}