-Currently you must include C<js/autocomplete_part.js> in your controller, the
-presenter can not do this from the template.
+C<part_picker> will register it's javascript for inclusion in the next header
+rendering. If you write a standard controller that only call C<render> once, it
+will just work. In case the header is generated in a different render call
+(multiple blocks, ajax, old C<bin/moilla> style controllers) you need to
+include C<js/autocomplete_part.js> yourself.