I found the code in the template section for adding a item on the client side. The code however seems to be incorrect because there is no Telerik.Web.UI.RadDropDownListItem() but rather Telerik.Web.UI.DropDownListItem().
Your observations are absolutely correct. Thank you for your pointing that out. I have already fixed the mentioned inaccuracy in our documentation articles and they will be updated soon. As a token of gratitude, I have updated your Telerik Points.
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