Invoice Totals Record

The totals node in an invoice document contains the totals, including VAT. Contained in https://wordbee.atlassian.net/wiki/spaces/API2/pages/2487255083

`totalExVat`	Total excluding VAT.	decimal
`totalExVatBase`	Total invoice line amounts excluding discounts. Excluding VAT.	decimal

`vatRate`	Applicable VAT rate. 0 is none.	decimal
`totalVat`	Total VAT amount. Equals vatRate totalExVat*.	decimal

`total`	Total amount including VAT. Equals totalExVat + totalVat.	decimal

EXAMPLES

Example payload:

{
    "totalExVat": 22.0000,
    "totalExVatBase": 22.0000,
    "totalVat": 3.9600,
    "vatRate": 18.0000,
    "total": 25.9600
}