# LibTmux::Workspace::ApplyError#failure_class

**Workspace Manager concept example** A working example of the core library. It can change without notice.

- **Module:** LibTmux::Workspace
- **Package:** libtmux-workspace
- **Language:** Ruby
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-ruby/blob/c8b839595d5a30e271e3f9be0d0fe811ddb11b7e/gems/libtmux-workspace/lib/libtmux/workspace/apply.rb#L43
- **Page:** https://libtmux.org/en/ruby/v0.1.0/workspace/reference/libtmux-workspace-applyerror-failure_class/

```
def failure_class: () -> ::String
```

Returns the value of attribute failure_class.

Behavior contract: Workspace results.