constructor(exchangeManager, orderCalculator, orderExecutor, logger, ticker) {
    this.exchangeManager = exchangeManager;
    this.orderCalculator = orderCalculator;
    this.orderExecutor = orderExecutor;
    this.logger = logger;
    this.ticker = ticker;
  }
@param exchangeManager
@param orderCalculator
@param orderExecutor
@param logger
@param ticker