wp-includes/rest-api/class-wp-rest-server.php:1909Sends an HTTP status code.
$codeint protected function set_status( $code ) { status_header( $code ); }Introduced in 4.4.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/rest-api/class-wp-rest-server.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.