Fetch the labels for an existing document

Example response

{
  "labels": [
    {
      "classifier": "classifier-language",
      "confidence": 100,
      "element_path": "body",
      "id": "ad2fe138-92ea-4642-adc0-53db0e2d4d1b",
      "label": "en",
      "version": "1-0-0"
    }
  ]
}