Nette\Database\Table\Selection::fetch PHP Method

    public function fetch()
    {
        $this->execute();
        $return = current($this->data);
        next($this->data);
        return $return;
    }

 /**
  * Fetches single row object.
  *
  * @return HyperRow|FALSE FALSE if there is no row
  */
 public function fetch()
 {
     $activeRow = $this->selection->fetch();
     if ($activeRow === FALSE) {
         return FALSE;
     }
     return $this->factory->createRow($activeRow, $this->selection->getName());
 }