https://basil79.github.io/vast-sample-tags/pg/vast.xml
https://basil79.github.io/vast-sample-tags/rama/vast.xml
https://basil79.github.io/vast-sample-tags/pg/vast-vpaid.xml
https://basil79.github.io/vast-sample-tags/rama/vast-vpaid.xml
https://basil79.github.io/vast-sample-tags/empty-no-ad.xml