public function getEsiForAllClientSurveys(Collection $client_surveys): EsiDataObject 	{ 		$applicants = new Collection;  		/** @var ClientSurvey $clientSurvey 		 */ 		foreach ($client_surveys as $clientSurvey) { 			foreach ($clientSurvey->getApplicants() as $applicant) { 				$applicants->push($applicant); 			} 		}  		return $this->esiService->generate($applicants); 	}