_trigger converts event name to lower case

_trigger converts event name to lower case

The base trigger method does a toLowerCase on the event name which is not apparent from any of the documentation or other resources I've scrounged together on the internet.  On some of my widgets I provide a custom event prefix usually in camel case; is there a reason the event name is lower cased?  If not I think it should be left alone or at least it should be explicitly noted in documentation.