{
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    "groups": {
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      "maxItems": 64,
      "items": {
        "type": "object",
        "required": ["files"],
        "properties": {
          "files": {
            "type": "array",
            "minItems": 1,
            "maxItems": 10,
            "items": { "type": "string" }
          },
          "label": { "type": "string", "maxLength": 80 }
        }
      }
    }
  }
}
