What is "VIEW" method?

In Postman app (Version 7.18.1 ), there is a method called “VIEW” like POST/GET/OPTIONS.

But I can’t find anything about this method on the internet (RFC/wikipedia/w3c…).

So what is it and how to use it?

PS.
I also find an app using it:

Xnip2020-02-27_12-14-18