code: func CreateDB(conf *Conf) *DB {
  	readOpts := &opt.ReadOptions{}
  	writeOptsNoSync := &opt.WriteOptions{}
  	writeOptsSync := &opt.WriteOptions{}
  	writeOptsSync.Sync = true
  
  	return &DB{
  		conf:            conf,
  		dbState:         closed,
  		readOpts:        readOpts,
  		writeOptsNoSync: writeOptsNoSync,
  		writeOptsSync:   writeOptsSync}
  }
docs: // CreateDB constructs a `DB`