public function cleanInternalBaAnswers(ClientSurvey $brand_awareness_survey, Request $request): Collection 	{ 		$allowed_ba_questions_id_array = $this->getAllowedQuestionIds($brand_awareness_survey);  		$answer_collection = $request->collect('answer_values');  		return $answer_collection->filter(function (mixed $value, string $key) use ($allowed_ba_questions_id_array) { 			return in_array($key, $allowed_ba_questions_id_array); 		}); 	}