toJson method
Serialises this item to the JSON format expected by the Paystack
POST /bulkcharge endpoint.
The amount is converted from the major unit to the subunit (e.g. GHS 50.00 → 5000 pesewas).
Implementation
Map<String, dynamic> toJson() => {
'authorization': authorizationCode,
'amount': (amount * 100).toStringAsFixed(0),
'reference': reference,
'email': email,
};