Reference built-in blueprint from custom space blueprint

[Derek Fields (RightStar)]

Is it possible to reference a built-in blueprint (e.g., Requirements page) from a custom space blueprint? The idea is to have a space blueprint that includes a few custom pages and some standard out-of-the-box pages. 

I looked in the .jar file for the space blueprints, but I am not sure how to reference them from my <content-template> tag. I want to do something like:

<space-blueprint key="example-space-blueprint" i18n-name-key="confluence.blueprints.space.example.name" category="examples">
  <content-template ref="custom-home-page"/>
  <content-template ref="requirements-page"/>
</space-blueprint>

[Gerald Krinke]

Have you ever found an answer to that? I'd like to do the same.