code: public static Filter getFilterForLocation(Class<?> clazz, String location) throws IllegalArgumentException {
          return getFilterForLocation(clazz, location, ContextHolder.get().getCurrentContextId());
      }
docs: returns a filter that matches services with the given class and location in both the current context and the
  root-context
  
  @throws IllegalArgumentException if the location contains special characters that prevent the filter from
  compiling