defaultExchangeSpecification.setSecretKey("xxx");
defaultExchangeSpecification.setExchangeSpecificParametersItem("walletId", "xx");
defaultExchangeSpecification.setExchangeSpecificParametersItem("userId", "xxx");
bitfinex.applySpecification(defaultExchangeSpecification);
// get all services
PollingMarketDataService marketDataService = bitfinex.getPollingMarketDataService();
PollingAccountService accout = bitfinex.getPollingAccountService();
PollingTradeService trades = bitfinex.getPollingTradeService();