The purpose of this component is to extend the DropdownSearch and DropdownTags patterns from the OutSystems UI framework with server side search.
Make sure to check out the Demo to understand how to implement it correctly.
Major kudos to @José Rio and @Bernardo Cardoso for helping out with this component in this thread
https://www.outsystems.com/forums/discussion/79073/dropdown-server-search/#Post330866
Outsystems UI reference update