RFE to write language model API tests for repeating annotations based on the spec updates

Test expected behaviour for both existing and new methods added in Java language model API for repeating Annotations

javax.lang.model.element.Element
        getAnnotation(Class<T>)
        getAnnotationMirrors()
        getAnnotations(Class<T>) - new method
        getAnnotations() - new method

javax.lang.model.util.Elements
        getAllAnnotationMirrors(Element e)