func (i *InmemStore) LastIndex() (uint64, error) {
	i.l.RLock()
	defer i.l.RUnlock()
	return i.highIndex, nil
}
func (i *InmemStore) LastIndex() (uint64, error) {
	i.l.RLock()
	defer i.l.RUnlock()
	return i.highIndex, nil
}
func ( i * InmemStore ) LastIndex ( ) ( uint64 , error ) { i . l . RLock ( ) defer i . l . RUnlock ( ) return i . highIndex , nil }
// LastIndex implements the LogStore interface.
LastIndex implements the LogStore interface .