I have a situation where I am setting the dataSource of a dropdowntree after defining it (using the setDropDown method). Howerver, I can't seem to be able to clear values from the dropdowntree in this scenario.
I tried to replicate the problem best I could in this dojo: https://dojo.telerik.com/iKoBOVIk/3
Upon selecting item 1 and item 2, if I click the button I want the selected values to be cleared. How can I achieve this?