There are few issues with
tell I think.
They set and get a property of the Source, rather than do an "action" on it, so I'd expect a "set/get" prefix. Also, even though the names are good for what they are, they have an obvious setter/getter relationship, and the name "tell" isn't super obvious, at least to me.
set/getLocation? I know it's kinda similar to
set/getPosition though, but here's hoping that wouldn't be too confusing.