Or if you are asking so that you modify the current loot that drops, look at the lines
Code:
public override void GenerateLoot()
{
AddLoot( LootPack.FilthyRich, 2 );
AddLoot( LootPack.Gems, 8 );
}
They create the loot for this creature. To actually modify them though you should look at the LootPack class.