{
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    "DocumentReference"
  ],
  "DocumentReference": {
    "elements": {
      "DocumentReference.docStatus": {
        "removed-types": [
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        ],
        "added-types": [
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        ]
      },
      "DocumentReference.content.format": {
        "old-max": "*",
        "new-max": "1"
      }
    },
    "status": "changed"
  }
}