/**
  * Connects this instance to the given instance using role "ordered pairs". If there is already an
  * instance connected to this instance through role "ordered pairs", the link will be overwritten.
  * If the given instance is null, an existing link is removed."
  *
  * @param orderedPairs the instance to connect
  * @throws PDStoreException
  */
 public void setOrderedPairs(GUID orderedPairs) throws PDStoreException {
   pdWorkingCopy.setLink(this.id, roleOrderedPairsId, orderedPairs);
 }