/** * Connects this instance to the given instance using role "ordered pairs". If the given instance * is null, nothing happens. * * @param orderedPairs the instance to connect * @throws PDStoreException */ public void addOrderedPairs(GUID orderedPairs) throws PDStoreException { if (orderedPairs != null) { pdWorkingCopy.addLink(this.id, roleOrderedPairsId, orderedPairs); } }