protected function classExists($name)
    {
        // Give `self`, `static` and `parent` a pass. This will actually let
        // some errors through, since we're not checking whether the keyword is
        // being used in a class scope.
        if (\in_array(\strtolower($name), ['self', 'static', 'parent'])) {
            return true;
        }

        return \class_exists($name) || $this->findInScope($name) === self::CLASS_TYPE;
    }