I saw the duplication, and thought of suggesting a string mixin, but the issue is that it would only (currently) be used for 2 overloads, and, in my eyes, the clarity provided by the minor duplication outweighs the cost of maintenance of the very localized duplication. With this small a method, if we were talking 3 overloads, I'd certainly consider it, and at 4 I'd call it a must.