At least pre-pandemic, that would be hard to do at the last stage (on-sites). You're generally in a room with one or more people and often whiteboarding rather than using a laptop. In the stages leading up to on-sites, in many cases, you're actually allowed to use reference materials like the official documentation -- which might contain examples -- because the interviewers don't necessarily expect you to have the entire standard library of the language you're using memorized. I've certainly Googled stuff during remote interviews myself, but I disclose that I'm doing that and explain what I'm searching for.