code: @Override
  	public com.liferay.commerce.shipping.engine.fixed.model.CommerceShippingFixedOptionRel addCommerceShippingFixedOptionRel(
  		com.liferay.commerce.shipping.engine.fixed.model.CommerceShippingFixedOptionRel commerceShippingFixedOptionRel) {
  		return _commerceShippingFixedOptionRelLocalService.addCommerceShippingFixedOptionRel(commerceShippingFixedOptionRel);
  	}
docs: Adds the commerce shipping fixed option rel to the database. Also notifies the appropriate model listeners.
  
  @param commerceShippingFixedOptionRel the commerce shipping fixed option rel
  @return the commerce shipping fixed option rel that was added