func (item Item) Expired() bool {
	if item.Expiration == 0 {
		return false
	}
	return time.Now().UnixNano() > item.Expiration
}
func (item Item) Expired() bool {
	if item.Expiration == 0 {
		return false
	}
	return time.Now().UnixNano() > item.Expiration
}
func ( item Item ) Expired ( ) bool { if item . Expiration == 0 { return false } return time . Now ( ) . UnixNano ( ) > item . Expiration }
// Returns true if the item has expired.
Returns true if the item has expired .