Does firebase set apns-push-type header automatically?

According to changes in iOS 13 for APNS, silent push notifications require additional header (apns-push-type).

I use Firebase as a mediator between backend and mobile, and I'm wondering if Firebase sets mentioned header automatically when content-available property is set to true.

It is already happening in AWS, as mentioned here.

Can I check somehow in iOS if this header was passed to silent push notification?

I've tested on my devices and everything is working after I updated Firebase dependency to the newest version, even in background. But still I don't have any proof how the header looks like.

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