transactionsBox := boxes.New(func(i interface{}) map[string]interface{} {
        transaction := i.(TransactionModel)
        m := make(map[string]interface{})
        m["id"] = transaction.GetId()
        m["date"] = transaction.GetDate()
        m["count"] = transaction.GetCount()
        return m
    }, func (m map[string]interface{}) interface{} {
        return &Transaction{
            int(m["id"].(float64)),
            int64(m["date"].(float64)),
            int(m["count"].(float64)),
        }
    }, "/home/user/stan/goxes/transactionsbox")

transactionsBox.Add(&Transaction{1, 100, 123},
					&Transaction{2, 58, 124},
					&Transaction{3, -45, 125},
					&Transaction{4, 23, 126},
					&Transaction{5, -78, 127})

for i, v := range transactionsBox.GetAll() {
    transaction := v.(*Transaction)
    fmt.Println(i, ")", "count:", transaction.GetCount())
}

for i, v := range transactionsBox.Query(func(e interface{}) bool {
    transaction := e.(*Transaction)
    return transaction.GetCount() < 75
}) {
    transaction := v.(*Transaction)
    fmt.Println(i, ")", "count:", transaction.GetCount())
}