getLatestCommitEntry method
The latest CommitEntry for key, or null if key has
never been committed.
Implementation
@override
CommitEntry? getLatestCommitEntry(String key) {
final rows = _db.raw.select(
'SELECT atkey, commit_id, operation, op_time FROM commit_log '
'WHERE atkey = ?;',
[key]);
return rows.isEmpty ? null : _entryFromRow(rows.first);
}