toJson method
Implementation
Map<String, dynamic> toJson() => {
'handle': handle,
if (userAgent != null) 'userAgent': userAgent,
if (ipAddress != null) 'ipAddress': ipAddress,
if (createdAt != null) 'createdAt': createdAt!.toIso8601String(),
if (lastActiveAt != null)
'lastActiveAt': lastActiveAt!.toIso8601String(),
'isCurrent': isCurrent,
};