timeStamp++;
	public void resolveConstraint(VersionConstraint constraint, Version actualVersion, BundleDescription supplier) {		VersionConstraintImpl modifiable = ((VersionConstraintImpl) constraint);		if (modifiable.getActualVersion() != actualVersion || modifiable.getSupplier() != supplier) {			timeStamp++;			modifiable.setActualVersion(actualVersion);			modifiable.setSupplier(supplier);						if (constraint instanceof BundleSpecification || constraint instanceof HostSpecification) {				boolean optional = (constraint instanceof BundleSpecification) && ((BundleSpecification) constraint).isOptional();								getDelta().recordConstraintResolved((BundleDescriptionImpl) constraint.getBundle(), optional);			}		}	}