# LibTmux::Async::ControlSubscription#closed?

- **Module:** LibTmux::Async
- **Package:** libtmux-async
- **Language:** Ruby
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-ruby/blob/da7b6191b9439e3c84fa1c9eeaa9168263ee7af4/gems/libtmux/lib/libtmux/control.rb#L156
- **Public owner:** LibTmux::ControlSubscription#closed?
- **Page:** https://libtmux.org/en/ruby/v0.1.1/reference/libtmux-async-controlsubscription-closed/

```
def closed?: () -> bool
```

Behavior: Control subscriptions.

Behavior contract: Control subscriptions.