# io.github.libtmux.query.TmuxFilters.format

- **Module:** io.github.libtmux.query
- **Package:** io.github.libtmux:libtmux
- **Language:** Java
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-java/blob/c067fced0dfd19bd6dd3d260e9d4c336becdb063/libtmux/src/main/java/io/github/libtmux/query/TmuxFilters.java#L21
- **Page:** https://libtmux.org/en/java/latest/reference/io-github-libtmux-query-tmuxfilters-tmuxfilters-format/

```
public static Optional<String> format(
        FilterExpr<?> expression)
```

A tmux format for {@code -f}, or empty when this expression is not a safe subset.

## Parameters

- `expression` (`FilterExpr<?>`)