wp-includes/SimplePie/src/SimplePie.php:1526$attribsoptional''void public function add_attributes($attribs = '') { if ($attribs === '') { $attribs = $this->add_attributes; } $this->sanitize->add_attributes($attribs); }One change between 6.7.7 and 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
none to void.verified against sourcesrc/wp-includes/SimplePie/src/SimplePie.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.