public function __call($method, $arguments)
 {
     if (strpos($method, 'set') === 0) {
         $property = substr($method, 3);
         if (isset($this->coordinates[$property])) {
             return call_user_func_array([$this, '__set'], array_merge([$property], $arguments));
         }
     }
     return parent::__call($method, $arguments);
 }