Currently, when dynamically appending menu items using the append() method, there is no built-in support to specify an icon via an icon, iconClass, or similar property — unlike other Kendo UI components such as kendo.ui.Button, which allow this directly.

To include an icon today, we must use inline HTML within the text property and set encoded: false, like so:

menu.append({
    text: '<span class="k-icon k-i-plus"></span> Add Item',
    encoded: false
});

While this workaround functions, it's not as clean or consistent as using a dedicated iconClass or icon option.

Please consider adding official support for an iconClass, icon, or similar property when using append() with kendo.ui.Menu, aligning it with how other Kendo components handle icons.

This would:

• Improve API consistency across Kendo components.
• Simplify code for dynamic menu updates.
• Eliminate reliance on raw HTML and manual encoding flags.