let Game = new GameObject()
let BlueFleet = new GameObject();
Game.root == Game;
BlueFleet.root = BlueFleet;
Game.addChild(BlueFleet);
BlueFleet.root == Game;

Game.addChild = function(child) {
  child.root = this.root;
  // rest of it
}

class InnerClass
{
    private int _a;
    public int a
    {
        get
        {
            return _a;
        }
        set
        {
            _a = value;
        }
    }
}

class MyClass {
  get a() {
    return 1
  }
  set a(newVal) {
    return;
  }
}
let myObject = new MyClass();
myObject.a; // 1
myObject.a = 2; // 2
myObject.a; //1