private function moveParamAnnotations($content)
    {
        $doc = new DocBlock($content);
        $params = $doc->getAnnotationsOfType('param');

        // nothing to do if there are no param annotations
        if (empty($params)) {
            return $content;
        }

        $others = $doc->getAnnotationsOfType(['throws', 'return']);

        if (empty($others)) {
            return $content;
        }

        // get the index of the final line of the final param annotation
        $end = end($params)->getEnd();

        $line = $doc->getLine($end);

        // move stuff about if required
        foreach ($others as $other) {
            if ($other->getStart() < $end) {
                // we're doing this to maintain the original line indexes
                $line->setContent($line->getContent().$other->getContent());
                $other->remove();
            }
        }

        return $doc->getContent();
    }