{
  "id": "duplicate-id",
  "evaluate": "duplicate-id.js",
  "after": "duplicate-id-after.js",
  "metadata": {
    "impact": "moderate",
    "messages": {
      "pass": "Document has no elements that share the same id attribute",
      "fail": "Document has multiple elements with the same id attribute: {{=it.data}}"
    }
  }
}