# io.github.libtmux.query.FieldRef.FieldRef.requireId

- **Module:** io.github.libtmux.query.FieldRef.FieldRef
- **Package:** io.github.libtmux:libtmux
- **Language:** Java
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-java/blob/842228310449e879ebcaa3f910597757c9dbffd6/libtmux/src/main/java/io/github/libtmux/query/FieldRef.java#L25
- **Page:** https://libtmux.org/en/java/latest/reference/io-github-libtmux-query-fieldref-fieldref-requireid/

```
io.github.libtmux.query.FieldRef.FieldRef.requireId(id: String) -> String
```