# server.Server.require

- **Module:** server.Server
- **Package:** libtmux
- **Language:** Rust
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-rs/blob/8a648c0894dfffc9303583f753b6c8ae01f2fe76/crates/libtmux/src/server.rs#L960
- **Page:** https://libtmux.org/reference/rs/server-server-require/

```
server.Server.require(self, capability: &'static str, needs: ReleaseVersion) -> Result<(), Error>
```

Read this server's release and refuse a capability it is too old for.