code: @Override
  	public CommerceShipmentItem findByPrimaryKey(Serializable primaryKey)
  		throws NoSuchShipmentItemException {
  		CommerceShipmentItem commerceShipmentItem = fetchByPrimaryKey(primaryKey);
  
  		if (commerceShipmentItem == null) {
  			if (_log.isDebugEnabled()) {
  				_log.debug(_NO_SUCH_ENTITY_WITH_PRIMARY_KEY + primaryKey);
  			}
  
  			throw new NoSuchShipmentItemException(_NO_SUCH_ENTITY_WITH_PRIMARY_KEY +
  				primaryKey);
  		}
  
  		return commerceShipmentItem;
  	}
docs: Returns the commerce shipment item with the primary key or throws a {@link com.liferay.portal.kernel.exception.NoSuchModelException} if it could not be found.
  
  @param primaryKey the primary key of the commerce shipment item
  @return the commerce shipment item
  @throws NoSuchShipmentItemException if a commerce shipment item with the primary key could not be found