public function handleAnswerGroupDeletion(Request $request, Question $question): void 	{ 		$answer_group_uuids = array_keys(Arr::where($request->answer_groups ?? [], function ($value, $key) { 			return Str::isUuid($key); 		}));  		$question->questionAnswerGroups()->whereNotIn('id', $answer_group_uuids)->delete(); 	}