public function addForwardedDocumentIds(\AgentSIB\Diadoc\Api\Proto\Forwarding\ForwardedDocumentId $value)
    {
        if ($this->ForwardedDocumentIds === null) {
            $this->ForwardedDocumentIds = new \Protobuf\MessageCollection();
        }

        $this->ForwardedDocumentIds->add($value);
    }