wp-includes/SimplePie/library/SimplePie/XML/Declaration/Parser.php:53 class SimplePie_XML_Declaration_Parser extends Parser { }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/SimplePie/library/SimplePie/XML/Declaration/Parser.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.