Implementation
@override
Map<String, Object> get bodyTrack {
var customBody = new Map<String, Object>();
customBody
.addAll({"t": typeOfEvent, 'tid': transactionId, 'ta': affiliation});
// Add revenue
if (revenue != null) customBody['tr'] = revenue ?? 0;
// Add shipping
if (shipping != null) customBody['ts'] = shipping ?? 0;
// Add Tax
if (tax != null) customBody['tt'] = tax ?? 0;
// Add currency
if (currency != null) customBody['tc'] = currency ?? "";
// Add coupon code
if (couponCode != null) customBody['tcc'] = couponCode ?? "";
// Add paymentMethod
if (paymentMethod != null) customBody['pm'] = paymentMethod ?? "";
// Add shippingMethod
if (shippingMethod != null) customBody['sm'] = shippingMethod ?? "";
// Add item count
if (itemCount != null) customBody['icn'] = itemCount ?? 0;
// Add commun data
customBody.addAll(super.communBodyTrack);
return customBody;
}