code: public static Iterable<Class<?>> getAnnotated(Class<? extends Annotation> annotation) {
  		return getAnnotated(annotation, Thread.currentThread().getContextClassLoader());
  	}
docs: Retrieves a list of classes annotated by given annotation.
  <p/>
  <p>
  The annotation must be annotated with {@link IndexAnnotated} for annotated classes
  to be indexed at compile-time by {@link org.atteo.classindex.processor.ClassIndexProcessor}.
  </p>
  
  @param annotation annotation to search class for
  @return list of annotated classes