/**
  * Removes the link from this instance through role "ordered pairs".
  *
  * @throws PDStoreException
  */
 public void removeOrderedPairs() throws PDStoreException {
   pdWorkingCopy.removeLink(
       this.id, roleOrderedPairsId, pdWorkingCopy.getInstance(this, roleOrderedPairsId));
 }
 /**
  * Returns the instance connected to this instance through the role "ordered pairs".
  *
  * @return the connected instance
  * @throws PDStoreException
  */
 public PDOrderedPair getOrderedPairs() throws PDStoreException {
   return (PDOrderedPair) pdWorkingCopy.getInstance(this, roleOrderedPairsId);
 }