code: func (n *NamespacedKV) Reset() {
  	it := n.db.NewIterator(util.BytesPrefix(n.prefix), nil)
  	defer it.Release()
  	batch := n.db.newBatch()
  	for it.Next() {
  		batch.Delete(it.Key())
  		batch.checkFlush()
  	}
  	batch.flush()
  }
docs: // Reset removes all entries in this namespace.