[yowlingcat]

As a manager and a hiring manager, the first time you do this, I'd explain to you that software is built and maintained by a team and not individuals, so you need to do a better job figuring out how to help that individual or create documentation so the team as a whole doesn't run into this issue again. The second time you'd do this, I'd explain to you that you're not meeting expectations as a team member and you've got exactly this window to fix things. By the third time you would have been managed out.

Don't do this kind of thing. It's extremely unprofessional.