private function processSingleCenterInstitution()
 {
     $firstMedicalCenter = isset($this->institution['institutionMedicalCenters'][0]) ? $this->institution['institutionMedicalCenters'][0] : null;
     if (!$firstMedicalCenter) {
         // FIXME: no medical center, right now throw an exception since this should not happen
         throw $this->createNotFoundException('Invalid single center clinic');
     }
     $this->apiInstitutionMedicalCenterService->buildInstitutionSpecializations($firstMedicalCenter)->buildBusinessHours($firstMedicalCenter)->buildDoctors($firstMedicalCenter);
     // build doctors from first clinic
     $this->institution['doctors'] = $firstMedicalCenter['doctors'];
     $this->institution['institutionMedicalCenters'][0] = $firstMedicalCenter;
 }