public function findServer($key)
 {
     if ($this->logging) {
         $start = microtime(true);
         $name = 'findServer';
         $arguments = array($key);
     }
     list($_key) = array($key);
     $result = parent::findServer($_key);
     list($key) = array($_key);
     if ($this->logging) {
         $time = microtime(true) - $start;
         $this->calls[] = (object) compact('start', 'time', 'name', 'arguments', 'result');
     }
     return $result;
 }