examples/java/src/test/resources/schema.txt

{
  "fields": [
    {
      "mode": "REQUIRED",
      "name": "Field1",
      "type": "STRING"
    },
    {
      "mode": "REQUIRED",
      "name": "Field2",
      "type": "STRING"
    },
    {
      "mode": "REQUIRED",
      "name": "Field3",
      "type": "STRING"
    }
  ]
}