toJson method
convert this instance to one Map
Implementation
Map<String, dynamic> toJson() => {
'userId': userId,
'token': token,
'expires': expires.toIso8601String(),
'lastRefresh': lastRefresh.toIso8601String(),
'applicationId': applicationId,
'graphDomain': graphDomain,
'isExpired': isExpired,
'grantedPermissions': grantedPermissions,
'declinedPermissions': declinedPermissions,
};