toJson method
Implementation
Map<String, dynamic> toJson() {
final _json = <String, dynamic>{};
_json['number'] = number;
_json['cvv'] = cvv;
_json['expiryMonth'] = expiryMonth;
_json['expiryYear'] = expiryYear;
_json['cardHolderEmail'] = cardHolderEmail;
_json['cardHolderName'] = cardHolderName;
return _json;
}