What exactly is Log.removed property? and what is it used for?

[rouzwelt]

Hey, I have a question, what exactly is removed property of a Log type? what is it used for? what does it indicate?
I really couldnt find any docs for it except a single line doc on the property definition itself, which says "true if filter was destroyed", what does that mean?
for example if I use client.getLogs() to get some logs, what would removed property indicate for each of the logs I get?