code: func (r Product_Package) GetItemPrices() (resp []datatypes.Product_Item_Price, err error) {
  	err = r.Session.DoRequest("SoftLayer_Product_Package", "getItemPrices", nil, &r.Options, &resp)
  	return
  }
docs: // Retrieve A collection of SoftLayer_Product_Item_Prices that are valid for this package.