# LibTmux::Engine::Incarnation.key

- **Module:** LibTmux::Engine
- **Package:** LibTmux
- **Language:** Raku
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-raku/blob/0b5dd3d32e20f83a0069874e33eab0eb48f55962/lib/LibTmux/Engine.rakumod#L106
- **Page:** https://libtmux.org/en/raku/latest/reference/libtmux-engine-incarnation-key/

```
method key(--> Str:D)
```

Return the length-delimited identity key without I/O.

Return the length-delimited identity key without I/O.