public static EquitySecurity makeExchangeTradedFund() {
EquitySecurity equitySecurity = new EquitySecurity("NYSE ARCA", "ARCX", "US NATURAL GAS FUND LP", USD);
equitySecurity.addExternalId(ExternalSchemes.bloombergTickerSecurityId("UNG US Equity"));
equitySecurity.addExternalId(ExternalSchemes.bloombergBuidSecurityId("EQ0000000003443730"));
equitySecurity.addExternalId(ExternalSchemes.cusipSecurityId("912318102"));
equitySecurity.addExternalId(ExternalSchemes.isinSecurityId("US9123181029"));
equitySecurity.addExternalId(ExternalSchemes.sedol1SecurityId("B1W5XX3"));
equitySecurity.setUniqueId(BloombergSecurityProvider.createUniqueId("EQ0000000003443730"));
equitySecurity.setShortName("UNG");
equitySecurity.setName("US NATURAL GAS FUND LP");
equitySecurity.setPreferred(false);