wp-includes/SimplePie/src/HTTP/RawTextResponse.php:89$namestring public function get_header_line(string $name): string { return isset($this->headers[strtolower($name)]) ? implode(", ", $this->headers[$name]) : ''; }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/RawTextResponse.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.