code: func (iter *storerCommitIter) Next() (*Commit, error) {
  	obj, err := iter.EncodedObjectIter.Next()
  	if err != nil {
  		return nil, err
  	}
  
  	return DecodeCommit(iter.s, obj)
  }
docs: // Next moves the iterator to the next commit and returns a pointer to it. If
  // there are no more commits, it returns io.EOF.