toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (backup != null) 'backup': backup!,
if (endTime != null) 'endTime': endTime!,
if (sourceBackup != null) 'sourceBackup': sourceBackup!,
if (sourceTable != null) 'sourceTable': sourceTable!,
if (startTime != null) 'startTime': startTime!,
};