public function getSystemId()
    {
        if (!is_null($this->_systemId)) {
            return $this->_systemId;
        }
        preg_match('/' . ucfirst($this->moduleType) . '([A-Za-z]+)\\\Module/', get_class($this), $matches);
        if (!isset($matches[1])) {
            throw new Exception(get_class($this) . " is not set up correctly!");
        }

        return $this->_systemId = $matches[1];
    }