code: public UResourceBundle get(int index) {
          UResourceBundle obj = handleGet(index, null, this);
          if (obj == null) {
              obj = getParent();
              if (obj != null) {
                  obj = obj.get(index);
              }
              if (obj == null)
                  throw new MissingResourceException(
                          "Can't find resource for bundle "
                                  + this.getClass().getName() + ", key "
                                  + getKey(), this.getClass().getName(), getKey());
          }
          return obj;
      }
docs: <strong>[icu]</strong> Returns the resource in a given resource at the specified index.
  
  @param index an index to the wanted resource.
  @return the sub resource UResourceBundle object
  @throws IndexOutOfBoundsException If the index value is out of bounds of accepted values.
  @throws MissingResourceException If the resource bundle is missing.