code: func (dbInst *DB) Get(key []byte) ([]byte, error) {
  	value, err := dbInst.db.Get(key, dbInst.readOpts)
  	if err == leveldb.ErrNotFound {
  		value = nil
  		err = nil
  	}
  	if err != nil {
  		logger.Errorf("Error retrieving leveldb key [%#v]: %s", key, err)
  		return nil, errors.Wrapf(err, "error retrieving leveldb key [%#v]", key)
  	}
  	return value, nil
  }
docs: // Get returns the value for the given key