{
  "tests": [
    {
      "description": "delete: delete with exists precondition",
      "comment": "Delete supports an exists precondition.",
      "delete": {
        "docRefPath": "projects/projectID/databases/(default)/documents/C/d",
        "precondition": {
          "exists": true
        },
        "request": {
          "database": "projects/projectID/databases/(default)",
          "writes": [
            {
              "delete": "projects/projectID/databases/(default)/documents/C/d",
              "currentDocument": {
                "exists": true
              }
            }
          ]
        }
      }
    }
  ]
}