declare_coercion "CoerceXeroType",
    from Str,
    via {
        return +{
            Invoice         => 'ACCREC',
            SupplierInvoice => 'ACCPAY',
            Credit          => 'ACCRECCREDIT',
            SupplierCredit  => 'ACCPAYCREDIT',
        }->{$_};
     }
;