lang/java/avro/src/test/resources/TestUnionRecord.avsc

[
  "null",
  {
    "namespace": "org.apache.avro.specific",
    "type": "record",
    "name": "TestUnionRecord",
    "fields": [
      {
        "name": "amount",
        "type": [
          "null",
          {
            "type": "bytes",
            "logicalType": "decimal",
            "precision": 31,
            "scale": 8
          }
        ],
        "default": null
      }
    ]
  }
]