code: protected UResourceBundle handleGet(int index, HashMap<String, String> aliasesVisited,
                                          UResourceBundle requested) {
          return null;
      }
docs: <strong>[icu]</strong> Actual worker method for fetching a resource based on the given index.
  Sub classes must override this method if they support arrays of resources.
  @param index the index of the resource to be fetched
  @param aliasesVisited hashtable object to hold references of resources already seen
  @param requested the original resource bundle object on which the get method was invoked.
  The requested bundle and the bundle on which this method is invoked
  are the same, except in the cases where aliases are involved.
  @return UResourceBundle a resource associated with the index