[test](./index.md)
## Package <root>
**Platform and version requirements:** Kotlin 1.1+
### Types
| [Since1.1](-since1.1/index.md)
(Kotlin 1.1) | `class Since1.1`
Useful |
| [Since1.2](-since1.2/index.md)
(Kotlin 1.2) | `class Since1.2`
Useful also |