wp-includes/Requests/src/Session.php:144Remove a property's value
$namestring public function __unset($name) { unset($this->options[$name]); }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/Requests/src/Session.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.