# io.github.libtmux.query.Fields.Fields.toOne

- **Module:** io.github.libtmux.query.Fields.Fields
- **Package:** io.github.libtmux:libtmux
- **Language:** Java
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-java/blob/c3517519ee799428a809ce6deb1708c8be289cd1/libtmux/src/main/java/io/github/libtmux/query/Fields.java#L40
- **Page:** https://libtmux.org/reference/java/io-github-libtmux-query-fields-fields-toone/

```
io.github.libtmux.query.Fields.Fields.toOne(id: String, navigate: Function<T, Optional<R>>) -> ToOneRef<T, R>
```