Returns SplFileInfo instance for the extension's info file.
\SplFileInfo The object to access a file information of info file.
https://www.php.net/manual/class.splfileinfo.php
public function getFileInfo() : \SplFileInfo { if (!isset($this->splFileInfo)) { $this->splFileInfo = new \SplFileInfo($this->root . '/' . $this->pathname); } return $this->splFileInfo; }