toJson method
Implementation
Map<String, dynamic> toJson() => {
if (redirectUrl != null) 'redirectUrl': redirectUrl,
if (requestPhone != null) 'requestPhone': requestPhone,
if (requestEmail != null) 'requestEmail': requestEmail,
if (requestAddress != null) 'requestAddress': requestAddress,
if (refId != null) 'refId': refId,
};