public ChildGenerator(VirtualizingWrapPanel owner)
            {
                this.owner = owner;

                var childrenCount = owner.InternalChildren.Count;

                this.generator = owner.ItemContainerGenerator;
            }
            public ChildGenerator(VirtualizingWrapPanel owner)
            {
                this.owner = owner;

                var childrenCount = owner.InternalChildren.Count;
                this.generator = owner.ItemContainerGenerator;
            }