camelCase variable names conflict with UnusedMethodArgument

[mmcguinn]

Simple (contrived) example:

Use camelCase for variable names.
                def self.foo(_dc)

Unused method argument - body. If it's necessary, use _ or _body as an argument name to indicate that it won't be used. You can also write as foo(*) if you want the method to accept any arguments but don't care about them.
                def self.foo(dc)

It looks like the camelCase detector is getting tripped up on any underscores at all, including those attempting to mark unused variables/arguments. I also tried multi-part names (like 'testName' vs. '_testName') but got the same problem.