var nextBusinessDay … func (r *Ratzstats) TodaysProfit() int { … } func (r *Ratzstats) TotalProfit() int { … } func (r *Ratzstats) RecordBarOrder(servicelevel int, order string, price int) { … } func (r *Ratzstats) OrdersInDetail() (total int) { … } func (r *Ratzstats) TotalOrders() (total int) { … } func (r *Ratzstats) MostOrderedDrink() (mostOrderedDrink string, mostOrderedTimes int) { … }