Ext.Net.TreePanelBase.FillIcons C# (CSharp) Method

        private void FillIcons(List<Icon> icons, TreeNodeBase node)
        {
            Icon icon = node.Icon;

            if (icon != Icon.None && !icons.Contains(icon))
            {
                icons.Add(icon);
            }

            if (node is TreeNode)
            {
                TreeNode treeNode = (TreeNode)node;
                foreach (TreeNodeBase nodeBase in treeNode.Nodes)
                {
                    this.FillIcons(icons, nodeBase);
                }
            }
        }