public function getName()
    {
        if ($this->name === null) {
            $class = get_called_class();
            if (preg_match('/_+(.+)_+/', $class, $matches) > 0) {
                $this->name = $matches[1];
            } else {
                $this->name = '';
            }
        }

        return $this->name;
    }