func (i *cacheItem) Postpone() {
	i.expireAt = time.Now().Add(i.lifetime)
}
func (i *cacheItem) Postpone() {
	i.expireAt = time.Now().Add(i.lifetime)
}
func ( i * cacheItem ) Postpone ( ) { i . expireAt = time . Now ( ) . Add ( i . lifetime ) }
// Postpone value expiration time to current time added to its lifetime
// duration.
Postpone value expiration time to current time added to its lifetime duration .