Unless of course you are bz or other DOM peer. We should add some very scary comment, like "THIS FUNCTION ABSOLUTELY REQUIRES APPROVAL FROM A KNOWLEDGEABLE JAVASCRIPT OR DOM PEER". I noticed somebody using it, because it probably just made stuff work. That is pretty bad. We might also want to look at some technical solution, I guess our current rooting analysis wouldn't notice it?

The static rooting analysis will ignore this function entirely, but it would be easy enough to extend the analysis with a whitelist (which could work by pattern matching) for valid arguments to fromMarkedLocation.

We seem to have enough institutional knowledge at this point that nobody is trying to use it as a simple type adapter anymore.