Ability to access CDI enhanced metadata from the InvocationContext.getMethod()

The issues with InvocationContext is it was designed before CDI as part of EJB 3. In CDI, the meta-data will likely exist in an annotation, but it could exist in an XML file (Candi, and Seam XML Extension for CDI).

For example, I am working on creating a standard interceptor for JCache 107. I can read the annotation from the getMethod of the InvocationContext, but if someone added the interception meta-data in an XML file, then it will not be available to InvocationContext.getMethod().getAnnotation(Cacheable.class).

I propose we have an extension interface that extends InvocationContext called CDIInvocationContext that has a getAnnotated. This way if someone annotates in an XML file, then it is available to implementors for interceptors.