logBeginCheckout method
      
Future<void> 
logBeginCheckout({ 
    
- double? value,
- String? currency,
- List<AnalyticsEventItem> ? items,
- String? coupon,
- Map<String, Object> ? parameters,
- AnalyticsCallOptions? callOptions,
inherited
    Logs the standard begin_checkout event.
This event signifies that a user has begun the process of checking out.
Note: If you supply the value parameter, you must also supply the currency
parameter so that revenue metrics can be computed accurately.
Implementation
Future<void> logBeginCheckout({
  double? value,
  String? currency,
  List<AnalyticsEventItem>? items,
  String? coupon,
  Map<String, Object>? parameters,
  AnalyticsCallOptions? callOptions,
}) {
  _requireValueAndCurrencyTogether(value, currency);
  _assertParameterTypesAreCorrect(parameters);
  _assertItemsParameterTypesAreCorrect(items);
  return _delegate.logEvent(
    name: 'begin_checkout',
    parameters: filterOutNulls(<String, Object?>{
      _VALUE: value,
      _CURRENCY: currency,
      _ITEMS: _marshalItems(items),
      _COUPON: coupon,
      if (parameters != null) ...parameters,
    }),
    callOptions: callOptions,
  );
}