Tests.TestUpdatableManager.RegisterGameobject C# (CSharp) Method

        public void RegisterGameobject(TestableGameObject obj)
        {
            if (objects.Contains(obj) || toAdd.Contains(obj)) {
                throw new ArgumentException("Duplicate game object");
            }
            toAdd.Add(obj);
        }

 public FakeGameObject(ITransform transform, TestUpdatableManager manager)
     : base(transform)
 {
     this.manager = manager;
     manager.RegisterGameobject(this);
     active = true;
 }