public IEnumerable <TValue> GreaterThan(TKey gtKey)
{
int compare = comparer.Compare(theKey, gtKey);
if (compare <= 0)
{
foreach (var value in Right.GreaterThan(gtKey))
{
yield return(value);
}
yield break;
}
foreach (var value in Left.GreaterThan(gtKey))
{
yield return(value);
}
yield return(Value);
foreach (var value in Right.GreaterThan(gtKey))
{
yield return(value);
}
}