code: func (r Billing_Order) GetReceipt() (resp datatypes.Container_Product_Order_Receipt, err error) {
  	err = r.Session.DoRequest("SoftLayer_Billing_Order", "getReceipt", nil, &r.Options, &resp)
  	return
  }
docs: // Generate a [[SoftLayer_Container_Product_Order_Receipt]] object with all the order information.