toMap method
Implementation
Map<String, dynamic> toMap() => {
'maskedCardNumber': maskedCardNumber,
'cardHolderName': cardHolderName,
'cardType': cardType?.name,
'expirationMonth': expirationMonth,
'expirationYear': expirationYear,
'entryMode': entryMode?.name,
'cardBrand': cardBrand,
};