public BerkeleyBulkEnumerator(BerkeleyError error)
        {
            _error = error;

            _cursor  = null;
            _current = new BerkeleyKeyValueBulk();
        }
        public BerkeleyBulkEnumerator(BerkeleyBulkCursorBase cursor)
        {
            _cursor = cursor;

            _current = new BerkeleyKeyValueBulk();
            _error   = BerkeleyError.NoError;
        }