# LibTmux::Async::ControlSubscription#generation

- **Module:** LibTmux::Async::ControlSubscription#
- **Package:** libtmux-async
- **Language:** Ruby
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-ruby/blob/c6d9d21771828e583692ca899ed817f9640d6a55/gems/libtmux/lib/libtmux/control.rb#L85
- **Page:** https://libtmux.org/en/ruby/latest/reference/libtmux-async-controlsubscription-generation/

```
LibTmux::Async::ControlSubscription#generation() -> ::String?
```

Returns the value of attribute generation.

Behavior contract: Control subscriptions.