I hereby propose the addition of the following method:

public <A extends Annotation> A ResourceInfo.getResourceAnnotation(Class<A> annotationClass)

The idea is that this method returns the annotation instance of the given annotationClass with full respect to the rules found in spec chapter 3.6. This effectively means, this method returns either the super class annotation, or the interface annotation, or the resource class annotation, or the resource method annotation, depending on whether any JAX-RS annotation is found in the particular deeper levels.

The benefit of this method is that there is no need for filters / interceptors to re-implement this algorithm again and again for custom annotations, in case the annotation author wants to apply the same rules as found in chapter 3.6 (hence: the new annotation shall "look and feel" like an official JAX-RS annotation). Implementations could make the already existing algorithm publicly available here, so it is guaranteed that the exact same treatment happens for custom annotations and for official annotations.