wp-includes/SimplePie/src/HTTP/Psr18Client.php:144$pathstring private function requestLocalFile(string $path): Response { if (!is_readable($path)) { throw new ClientException(sprintf('file "%s" is not readable', $path)); } try { $raw = file_get_contents($path); } catch (Throwable $th) { throw new ClientException($th->getMessage(), $th->getCode(), $th); } if ($raw === false) { throw new ClientException('file_get_contents() could not read the file', 1); } return new RawTextResponse($raw, $path); }Unchanged from 6.9.7 through 7.1.0.
Signature, return type and hooks compared across 3 parsed releases.
src/wp-includes/SimplePie/src/HTTP/Psr18Client.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.