* @throws ConfigurationChangeException Falls der Attribut-Typ nicht vervollständigt werden konnte (Mengen und Datensätze).
	 */
	private void completeAttributeType(ImportObject importObject) throws ConfigurationChangeException {
		final AttributeType attributeType = (AttributeType)importObject.getSystemObject();
		final AttributeTypeProperties property = (AttributeTypeProperties)importObject.getProperties();
		try {
			if(attributeType instanceof ReferenceAttributeType) {
				final ConfigurationObjectReference configurationObjectReference = (ConfigurationObjectReference)property.getAttributeType();
				final ReferenceAttributeType referenceAttributeType = (ReferenceAttributeType)attributeType;
				if(_objectDiffs.isReferenceAttributeTypeDifferent(configurationObjectReference, referenceAttributeType)) {
					setReferenceAttributeTypeProperties(referenceAttributeType, configurationObjectReference);
				}
			}
		}
		catch(ConfigurationChangeException ex) {
			final String errorMessage = "Der AttributTyp " + property.toString() + " konnte nicht vollständig erstellt werden";
			_debug.error(errorMessage);
			throw new ConfigurationChangeException(errorMessage, ex);
		}
	}