Handle references and pagination values

[AlexanderAllen]

Open API schemas may include examples such as:

      "origin": {
        "$ref": "#/components/examples/Playlist/value"
      }

  "next_href": "https://api.soundcloud.com/me/activities?limit=10&cursor=00000",
  "future_href": "https://api.soundcloud.com/me/activities?limit=10&cursor=000001"

Need unit testing to ensure the reference is typed to something that makes sense in PHP.

As for the pagination this is an API-specific implementation of GET/URL based pagination and it may make no sense to write any implementation details in Panettone. However, consider what typing this particular element of the response in Panettone may look like.