/**
   * @return An Iterator of AttributeDefinitionREFs without attempting lazy resolution (if it's
   *     turned on).
   */
  @SuppressWarnings("unchecked")
  // org.dmd.dms.util.GenUtility.formatMV(GenUtility.java:990)
  public Iterator<AttributeDefinitionREF> getOnePossibilityREFs() {
    DmcTypeAttributeDefinitionREFMV attr =
        (DmcTypeAttributeDefinitionREFMV) get(DmvDMSAG.__onePossibility);
    if (attr == null) return (((List<AttributeDefinitionREF>) Collections.EMPTY_LIST).iterator());

    return (attr.getMV());
  }
  /** @return An Iterator of AttributeDefinitionDMO objects. */
  @SuppressWarnings("unchecked")
  // org.dmd.dms.util.GenUtility.formatMV(GenUtility.java:970)
  public Iterator<AttributeDefinitionREF> getOnePossibility() {
    DmcTypeAttributeDefinitionREFMV attr =
        (DmcTypeAttributeDefinitionREFMV) get(DmvDMSAG.__onePossibility);
    if (attr == null) return (((List<AttributeDefinitionREF>) Collections.EMPTY_LIST).iterator());

    if (DmcOmni.instance().lazyResolution()) {
      if (attr.doLazyResolution(this)) {
        rem(attr.getAttributeInfo());
        return (((List<AttributeDefinitionREF>) Collections.EMPTY_LIST).iterator());
      }
    }

    return (attr.getMV());
  }