code: @Indexable(type = IndexableType.REINDEX)
  	@Override
  	public CommerceDiscountRule updateCommerceDiscountRule(
  		CommerceDiscountRule commerceDiscountRule) {
  		return commerceDiscountRulePersistence.update(commerceDiscountRule);
  	}
docs: Updates the commerce discount rule in the database or adds it if it does not yet exist. Also notifies the appropriate model listeners.
  
  @param commerceDiscountRule the commerce discount rule
  @return the commerce discount rule that was updated