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