public override void AddToDictionary(MessageDictionary dictionary, MethodInfo info)
{
var keyList = _parser.Parse(_keyList);
if (keyList.Count() != _charList.Length)
throw new Exception("CharacterMapAttribute requires the key list and the character list to be of identical length");
keyList.Do(
(i, key) =>
dictionary.AddKey(_mode, key, BuildMessage(info, _charList[i])));
}