# LibTmux::Async::ControlConnection#previous_generation

- **Module:** LibTmux::Async::ControlConnection#
- **Package:** libtmux-async
- **Language:** Ruby
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-ruby/blob/c6d9d21771828e583692ca899ed817f9640d6a55/gems/libtmux/lib/libtmux/control.rb#L333
- **Page:** https://libtmux.org/en/ruby/latest/reference/libtmux-async-controlconnection-previous_generation/

```
LibTmux::Async::ControlConnection#previous_generation() -> ::String?
```

Returns the value of attribute previous_generation.

Behavior contract: Control connections.