wp-admin/includes/class-ftp.php:476$command$fnctionoptional"site" function site($command, $fnction="site") { if(!$this->_exec("SITE ".$command, $fnction)) return FALSE; if(!$this->_checkCode()) return FALSE; return TRUE; }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/class-ftp.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.