/**
  * Check if $institution is of type SINGLE_CENTER
  *
  * @param Mixed <Institution, array> $institution
  * @return boolean
  */
 public function isSingleCenter(Institution $institution)
 {
     if ($institution instanceof Institution) {
         $type = $institution->getType();
     } else {
         $type = $institution['type'];
     }
     return InstitutionTypes::SINGLE_CENTER == $type;
 }