code: private boolean checkTickerFreshness() {
  		final QuoteManager quoteManager = bitfinexApiBroker.getQuoteManager();
  		final Map<BitfinexStreamSymbol, Long> heartbeatValues = quoteManager.getLastTickerActivity();
  
  		return checkTickerFreshness(heartbeatValues);
  	}
docs: Are all tickers up-to-date
  @return