Select2 inside Google Maps Control UI

Hello y’all.
I want to integrate select2 inside Google Maps API Control.
My question is, how to make it happen?
i mean, Google Maps control will be load after Document is ready. and with that event, it will add event that trigger google maps to add element like select.
I’ve tried to using “idle” event of Google Maps API, then inside that event after it fired up, I’ve added Select2 intialization. But its not working.
Is there someone having the same problem with me?
thank you so much.
sorry for my bad english.