toJson method
Implementation
@override
Map<String, Object?> toJson() => {
if (mobileMoney != null) "mobile_money": encodeValue(mobileMoney),
if (bankAccount != null) "bank_account": encodeValue(bankAccount),
if (card != null) "card": encodeValue(card),
if (motito != null) "motito": encodeValue(motito),
};