public function build()
    {
        $video = [
            'originalContentUrl' => $this->originalContentUrl,
            'previewImageUrl' => $this->previewImageUrl,
            'area' => $this->areaBuilder->build()
        ];
        if ($this->externalLinkBuilder) {
            $video['externalLink'] = $this->externalLinkBuilder->build();
        }
        return $video;
    }