public function getLogoLinks(SurveyType $survey_type): array 	{ 		$logo_links = [];  		foreach (DomainLanguages::cases() as $key => $locale) { 			$logo_links[$locale->value] = $this->createBase64ImgSrcLink($this->getLogoPath($survey_type, $locale)); 		}  		return $logo_links; 	}