# io.github.libtmux.junit5.TmuxExtension.startOf

- **Module:** io.github.libtmux.junit5
- **Package:** io.github.libtmux:libtmux
- **Language:** Java
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-java/blob/c067fced0dfd19bd6dd3d260e9d4c336becdb063/libtmux-junit5/src/main/java/io/github/libtmux/junit5/TmuxExtension.java#L228
- **Page:** https://libtmux.org/en/java/latest/reference/io-github-libtmux-junit5-tmuxextension-tmuxextension-startof/

```
static Optional<String> startOf(long pid)
```

When a process started, in a form every JVM on this machine reads the same way: the kernel's own ticks since boot on Linux, and the platform's start instant elsewhere.

## Parameters

- `pid` (`long`)