public static byte[] NextBytes(this IRNG <ulong> rng, int count)
{
if (rng == null)
{
throw new ArgumentNullException(nameof(rng));
}
if (count < 0)
{
throw new ArgumentOutOfRangeException(nameof(count));
}
if (count == 0)
{
return(new byte[0]);
}
var rv = new byte[count];
rng.Fill(rv);
return(rv);
}