code: public static com.liferay.commerce.model.CommerceShipmentItem updateCommerceShipmentItem(
  		com.liferay.commerce.model.CommerceShipmentItem commerceShipmentItem) {
  		return getService().updateCommerceShipmentItem(commerceShipmentItem);
  	}
docs: Updates the commerce shipment item in the database or adds it if it does not yet exist. Also notifies the appropriate model listeners.
  
  @param commerceShipmentItem the commerce shipment item
  @return the commerce shipment item that was updated