How can I set following two properties (which might be multiple value properties) dc:subjects and dc:contributors. I can set all the other properites by passing their values as string using following method...
$answer = $session->newRequest("Document.SetProperty")->set('input', 'doc:' . $path)->set('params', 'value', $value)->set('params', 'xpath', $xpath)->sendRequest();
where $xpath is property name such as dc:title and $value is string like 'My First File'.