/// <summary>
/// Calls <code>rated(int, int)</code> with both arguments as zero.
/// </summary>
public static GraphTraversal <Vertex, IDictionary <string, long> > DistributionForAges(this GraphTraversal <Vertex, Edge> t, int start, int end)
{
if (start < 18)
{
throw new ArgumentException("Age must be 18 or older");
}
if (start > end)
{
throw new ArgumentException("Start age must be greater than end age");
}
if (end > 120)
{
throw new ArgumentException("Now you're just being crazy");
}
return(t.Filter(__.OutV().Has(KeyAge, Between(start, end))).Group <string, long>().By(KeyRating).By(__.Count()));
}