For guice, if you want to bind() a generic type you have to use the
TypeLiteral class. The type however is not of Class and the registration of class's annotated with
@Provider were being ommited.

see: https://github.com/google/guice/wiki/FrequentlyAskedQuestions#how-to-inject-class-with-generic-type

PR: https://github.com/resteasy/Resteasy/pull/693