JSON Document Type

Hi,
I have a problem with the JSON document type. As an example I just took the “address” from the IS 10.7 documentation (I am not allowed to put the link here…):

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "http://example.com/example.json",
  "type": "object",
  "properties": {
    "address": {
      "type": "object",
      "properties": {
        "streetAddress": {
          "type": "string"
        },
        "city": {
          "type": "string"
        }
      }
    },
    "phoneNumber": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "type": {
            "type": "string"
          },
          "number": {
            "type": "number"
          }
        }
      }
    }
  }
}

So I have loaded the schema and created a JSON Document Type. So far so good.

When I fill the created address Document Type and convert it to a string via pub.json:documentToJSONString it creates me something like:

{
  "streetAddress" : "teststr",
  "city" : "test"
}

But what I basically need is:

{
  "address": {
    "streetAddress" : "teststr",
    "city" : "test"
  }
}

Hopefully you can help me on how I have to change the schema or maybe some options.
Thanks and kind regards,
Thorben

Seems I found a solution: if I use a document reference as input (pointing to the JSON Document Type) it is working as expected.