I've done this in the past where I was applying properties from an initialization method that should just named the same (see `refreshConfiguration` below). Though, I believe I made the *parameter* prefixed by an underscore, not the module variable. I very well may have diverged from this patter though.

I would vote that it be ok for parameter names in the situation described (not biased at all....), but any other use of underscored variables (aside from private functions) should probably be cleaned up.