toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (limit != null) 'limit': limit!,
if (usage != null) 'usage': usage!,
if (usageInDrive != null) 'usageInDrive': usageInDrive!,
if (usageInDriveTrash != null) 'usageInDriveTrash': usageInDriveTrash!,
};