static void Main(string[] args)
{
var bob = new Kid("Bob", new List <Kid>());
var alice = new Kid("Alice", new List <Kid>());
var jimList = new List <Kid>();
jimList.Add(bob);
jimList.Add(alice);
var jim = new Kid("Jim", jimList);
var joeList = new List <Kid>();
joeList.Add(bob);
var joe = new Kid("Joe", joeList);
var dudeList = new List <Kid>();
dudeList.Add(jim);
dudeList.Add(alice);
var dude = new Kid("Dude", dudeList);
var sophieList = new List <Kid>();
sophieList.Add(dude);
var sophie = new Kid("Sophie", sophieList);
var margretList = new List <Kid>();
margretList.Add(sophie);
var margret = new Kid("Margret", margretList);
try {
Console.WriteLine($"{bob.CanBeFriendsWith(bob)}");
var v2 = bob.CanBeFriendsWith(alice);
Console.WriteLine($"{v2}");
var v3 = bob.CanBeFriendsWith(jim);
Console.WriteLine($"{v3}");
} catch (NullReferenceException e) {
Console.WriteLine($"{e.Source}")
}
return;
}