original file is located in
components/com_sppagebuilder/assets/js/sppagebuilder.js
I've tried following locations (following the logic of overrides), none of which worked:
templates/MY_TEMPLATE/sppagebuilder/assets/js/sppagebuilder.js
templates/MY_TEMPLATE/sppagebuilder/assets/sppagebuilder.js
templates/MY_TEMPLATE/sppagebuilder/sppagebuilder.js
templates/MY_TEMPLATE/js/sppagebuilder.js
So where should I place customized / modified sppagebuilder.js ?