code: func (r Account_Shipment_Item) GetShipmentItemType() (resp datatypes.Account_Shipment_Item_Type, err error) {
  	err = r.Session.DoRequest("SoftLayer_Account_Shipment_Item", "getShipmentItemType", nil, &r.Options, &resp)
  	return
  }
docs: // Retrieve The type of this shipment item.