}
@Override
public synchronized Collection<CurrencyPair> getExchangeSymbols() throws IOException {
CryptsyCurrencyPairsReturn response = new CryptsyPublicMarketDataServiceRaw().getCryptsyCurrencyPairs();
HashMap<String, CryptsyMarketId> map = response.getReturnValue();
currencyPairs.clear();
CryptsyCurrencyUtils.marketIds_CurrencyPairs.clear();
CryptsyCurrencyUtils.currencyPairs_MarketIds.clear();