private static void Main()
{
Adam adam = Adam.GetInstance();
Eve eve = Eve.GetInstance(adam);
Male seth = new Male("Seth", eve, adam);
Female azura = new Female("Azura", eve, adam);
Male enos = new Male("Enos", azura, seth);
Console.WriteLine(((Human)enos).Name);
Console.ReadKey();
}
public static Eve GetInstance(Adam adam)
{
_adamInstance = adam ?? throw new ArgumentNullException();
return(_eveInstance ??= new Eve(_adamInstance));
}
private Eve(Adam adam)
{
_adamInstance = adam;
}