I love the mouse gestures in 2013 and have several set up.

It occured to me today that I am forever heading off to File/Get Write Access, as we are set up that that by choice, so I thought I would add a gesture for that.

But I can't see it there at all. I went through the entire list, which surprisingly even included options for my 3D space pilot, but no "Get write access"

Is there no way to do this?