public IEnumerator <DiffSegnment <TKey> > GetEnumerator()
{
var resultingSequence =
CommonKeys.Select(key => new DiffSegnment <TKey>(EditOperation.Equl, key)).Concat(
DeletedKeys.Select(key => new DiffSegnment <TKey>(EditOperation.Delete, key))
).Concat(
InsertedKeys.Select(key => new DiffSegnment <TKey>(EditOperation.Insert, key))
);
return(resultingSequence.GetEnumerator());
}
