code: public Multimap<String, String> get(String index) {
          Multimap<String, String> mmap = storeMap.get(index);
          if (mmap == null) {
              throw new ReflectionsException("Scanner " + index + " was not configured");
          }
          return mmap;
      }
docs: get the multimap object for the given {@code index}, otherwise throws a {@link org.reflections.ReflectionsException}