public function getRelativePath()
    {
        $packageHandle = $this->getPackageHandle();
        if (is_dir($this->DIR_PACKAGES . '/' . $packageHandle)) {
            $result = $this->REL_DIR_PACKAGES . '/' . $packageHandle;
        } else {
            $result = $this->REL_DIR_PACKAGES_CORE . '/' . $packageHandle;
        }

        return $result;
    }