class DVChainExchange extends BaseExchange {
  private final SynchronizedValueFactory<Long> nonceFactory =
      new CurrentTimeIncrementalNonceFactory(TimeUnit.SECONDS);

  /** Adjust host parameters depending on exchange specific parameters */
  private static void concludeHostParams(ExchangeSpecification exchangeSpecification) {

    if (exchangeSpecification.getExchangeSpecificParameters() != null) {
      if (exchangeSpecification
          .getExchangeSpecificParametersItem(Exchange.USE_SANDBOX)
          .equals(true)) {

        exchangeSpecification.setSslUri("https://sandbox.trade.dvchain.co");
        exchangeSpecification.setHost("sandbox.trade.dvchain.co");
      }
    }
  }

  @Override
  public ExchangeSpecification getDefaultExchangeSpecification() {

    ExchangeSpecification exchangeSpecification = new ExchangeSpecification(this.getClass());
    exchangeSpecification.setSslUri("https://trade.dvchain.co");
    exchangeSpecification.setHost("trade.dvchain.co");
    exchangeSpecification.setPort(80);
    exchangeSpecification.setExchangeName("DVChain");
    exchangeSpecification.setExchangeDescription(
        "DVChain is an OTC provider for a variety of cryptocurrencies.");

    exchangeSpecification.setExchangeSpecificParametersItem(Exchange.USE_SANDBOX, false);

    return exchangeSpecification;
  }

  @Override
  protected void initServices() {<FILL_FUNCTION_BODY>}

  @Override
  public void applySpecification(ExchangeSpecification exchangeSpecification) {

    super.applySpecification(exchangeSpecification);

    concludeHostParams(exchangeSpecification);
  }

  @Override
  public SynchronizedValueFactory<Long> getNonceFactory() {
    return nonceFactory;
  }
}


    concludeHostParams(exchangeSpecification);
    DVChainMarketDataService md = new DVChainMarketDataService(this);

    this.marketDataService = md;
    this.tradeService = new DVChainTradeService(md, this);
  
<methods>public non-sealed void <init>() ,public void applySpecification(org.knowm.xchange.ExchangeSpecification) ,public org.knowm.xchange.service.account.AccountService getAccountService() ,public List<org.knowm.xchange.instrument.Instrument> getExchangeInstruments() ,public org.knowm.xchange.dto.meta.ExchangeMetaData getExchangeMetaData() ,public org.knowm.xchange.ExchangeSpecification getExchangeSpecification() ,public org.knowm.xchange.service.marketdata.MarketDataService getMarketDataService() ,public java.lang.String getMetaDataFileName(org.knowm.xchange.ExchangeSpecification) ,public SynchronizedValueFactory<java.lang.Long> getNonceFactory() ,public org.knowm.xchange.service.trade.TradeService getTradeService() ,public void remoteInit() throws java.io.IOException, org.knowm.xchange.exceptions.ExchangeException,public java.lang.String toString() <variables>protected org.knowm.xchange.service.account.AccountService accountService,protected org.knowm.xchange.dto.meta.ExchangeMetaData exchangeMetaData,protected org.knowm.xchange.ExchangeSpecification exchangeSpecification,protected final Logger logger,protected org.knowm.xchange.service.marketdata.MarketDataService marketDataService,private final SynchronizedValueFactory<java.lang.Long> nonceFactory,protected org.knowm.xchange.service.trade.TradeService tradeService