public void SetToken(TDelegate node)
        {
            if (_token_ != null)
            {
                _token_.Parent(null);
            }

            if (node != null)
            {
                if (node.Parent() != null)
                {
                    node.Parent().RemoveChild(node);
                }

                node.Parent(this);
            }

            _token_ = node;
        }
        public void SetDelegate(TDelegate node)
        {
            if (_delegate_ != null)
            {
                _delegate_.Parent(null);
            }

            if (node != null)
            {
                if (node.Parent() != null)
                {
                    node.Parent().RemoveChild(node);
                }

                node.Parent(this);
            }

            _delegate_ = node;
        }