parent $lock_class object $false_lock_class var $root owners [$false_lock_class] var $root owned [$false_lock_class] var $root manager $false_lock_class var $root writable [$false_lock_class] var $root readable ['parameters, 'methods, 'code] var $root dbref 'false_lock_class method new return <this(), []>; . method try arg lock, obj; return 0; .