# tmux_snapshot:coverage/1

- **Package:** libtmux_erlang
- **Language:** Erlang
- **Kind:** function
- **Source:** https://github.com/libtmux/libtmux-erlang/blob/d1b6308440cf9eb8f6647e7ae434bce60e849368/apps/libtmux_erlang/src/tmux_snapshot.erl#L181
- **Page:** https://libtmux.org/en/erlang/latest/reference/tmux_snapshot-coverage-1/

```
coverage/1
-spec coverage(t()) -> coverage().
```

Return per-collection, field and relationship coverage. Loaded values, known absence, not_loaded and unavailable capabilities have distinct meanings. Performs no I/O.

## Parameters

- `Argument1` (`t()`)