code: func (m Memory) Int64() int64 {
  	i, err := strconv.ParseInt(string(m.Val), 10, 64)
  	if err != nil && err.Error() != "strconv.ParseInt: parsing \"\"\"\": invalid syntax converting memory to int64" {
  		m.log.Debugf("could not convert memory to int64 %s (%s, %s)",
  			err, m.Key, string(m.Val))
  	}
  	return i
  }
docs: // Int64 is a helper method making it easier to perform a common use-case,
  // converting a memory's []byte Val into an int64 and protecting against a
  // common error.