How do I know when Vorpal.parse() finished executing the command?

Hello!

I'm using [`Vorpal.parse()`](https://github.com/dthree/vorpal/wiki/API-%7C-vorpal#vorpalparseargv-options) function in order to manually trigger command execution.

However, this function has no callback and is not returning any promises. How do I know when it finished executing the command, so I can continue my other code execution?

Thanks!