Gmail Promotions markup in a customizable HubSpot module

gmail-promo-tab-module.html

<div itemscope itemtype="http://schema.org/Organization">
   <meta itemprop="name" content="{{ module.organization_name }}" />
   <meta itemprop="logo" content="{{ module.small_logo }}" />
</div>
<div itemscope itemtype="http://schema.org/DiscountOffer">
  <meta itemprop="description" content="{{ module.discount_amount }}" />
  <meta itemprop="discountCode" content="{{ module.discount_code }}" />
  <meta itemprop="availabilityStarts" content="{{ module.deal_starts|datetimeformat('%Y-%m-%dT%H:%M:%S%z') }}" />
  <meta itemprop="availabilityEnds" content="{{ module.deal_ends|datetimeformat('%Y-%m-%dT%H:%M:%S%z') }}" />
</div>
<div itemscope itemtype="http://schema.org/PromotionCard">
  <meta itemprop="image" content="{{ module.promo_image }}" />
</div>

Just found this. Is it a way to add the data needed to setup a gmail promo tab in your email message?