{
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    {
      "name": "x"
    },
    {
      "name": "y"
    }
  ],
  "edges": [
    {
      "edge_id": {
        "src_path": [
          "x"
        ],
        "src_arrow": false,
        "dst_path": [
          "y"
        ],
        "dst_arrow": true,
        "index": 0
      }
    }
  ]
}