# LibTmux::QueryPlan::policy

- **Module:** LibTmux
- **Package:** LibTmux
- **Language:** Perl
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-perl/blob/352715a4fa66a96eed7763b90daaa536aa2f121d/packages/core/lib/LibTmux/QueryPlan.pm#L32
- **Page:** https://libtmux.org/en/perl/latest/reference/libtmux-queryplan-policy/

```
sub policy($self)
```

Return auto, never, or require. [`"query_panes" in LibTmux::Server`](/en/perl/latest/reference/libtmux-server-query_panes/) executes the plan with complete captured local evaluation. Native candidates cannot hide errors or discard matches from that captured result. Only verified complete translation qualifies for require; runtime disagreement throws [`"QueryMismatch" in LibTmux::X`](/en/perl/latest/reference/libtmux-x-querymismatch/) without assigning a cause. The optional [`"query_panes" in LibTmux::Server`](/en/perl/latest/reference/libtmux-server-query_panes/) observer exposes completed comparisons.

## Methods