phpdoc not generated on methods having trailling comma

Having ...
```PHP
<?php

interface ModelRepositoryInterface
{

    public function get(array $params,): ?array;
}
```

... if you type `/**` and empty doc is generated. But if you remove trailing comma ( `,` after `array $params`) and you try again, proper phpdoc is generated. 
Same error for classes, interfaces, traits...