code: public T fql_query(CharSequence query)
      throws FacebookException, IOException {
      assert (null != query);
      return this.callMethod(FacebookMethod.FQL_QUERY,
                             new Pair<String, CharSequence>("query", query));
    }
docs: Retrieves the results of a Facebook Query Language query
  @param query : the FQL query statement
  @return varies depending on the FQL query