code: func (r Billing_Order) GetPaypalTransactions() (resp []datatypes.Billing_Payment_PayPal_Transaction, err error) {
  	err = r.Session.DoRequest("SoftLayer_Billing_Order", "getPaypalTransactions", nil, &r.Options, &resp)
  	return
  }
docs: // Retrieve All PayPal transactions associated with this order. If this order was not placed with PayPal, this will be empty.