protected override int Correct(int currentOff)
{
KeyValuePair <int, int> lastEntry = CollectionsHelper.LowerEntry(Corrections, currentOff + 1);
int ret = lastEntry.Equals(default(KeyValuePair <int, int>)) ? currentOff : currentOff + lastEntry.Value;
Debug.Assert(ret >= 0, "currentOff=" + currentOff + ",diff=" + (ret - currentOff));
return(ret);
}