code: public Future<Collection<SummonerSpell>> getSummonerSpells(SpellData data, String version, String locale, boolean dataById) {
          return new DummyFuture<>(handler.getSummonerSpells(data, version, locale, dataById));
      }
docs: <p>
  Get a list of all summoner spells as Java Collection
  </p>
  This method does not count towards the rate limit and is not affected by the throttle
  @param data Additional information to retrieve
  @param version Data dragon version for returned data
  @param locale Locale code for returned data
  @param dataById If specified as true, the returned data map will use the spells' IDs as the keys.
  @return The summoner spells
  @see <a href=https://developer.riotgames.com/api/methods#!/649/2174>Official API documentation</a>