---
title: identifier
framework: appkit
role: symbol
role_heading: Instance Property
path: appkit/nstabviewitem/identifier
---

# identifier

Sets the receiver’s optional identifier object to identifier.

## Declaration

```swift
var identifier: Any? { get set }
```

## Discussion

Discussion To customize how your application works with tabs, you can specify an identifier object for each tab view item.

## See Also

### Related Documentation

- [init(identifier:)](appkit/nstabviewitem/init(identifier:).md)