class ExternalSchemes {

  public static ExternalId bloombergTickerSecurityId(final String ticker) {
    ArgumentChecker.notNull(ticker, "code");
    if (ticker.length() == 0) {
      throw new IllegalArgumentException("Ticker is invalid: " + ticker);
    }
    return ExternalId.of(BLOOMBERG_TICKER, ticker);
  }

  protected  ExternalSchemes();

}