wp-includes/SimplePie/src/XML/Declaration/Parser.php:137Check whether there is data beyond the pointer
bool public function has_data(): bool { return (bool) ($this->position < $this->data_length); }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/SimplePie/src/XML/Declaration/Parser.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.