lang/java/integration-test/codegen-test/src/test/resources/avro/nested_logical_types_union.avsc

{"namespace": "org.apache.avro.codegentest.testdata",
  "type": "record",
  "name": "NestedLogicalTypesUnion",
  "doc" : "Test nested types with logical types in generated Java classes",
  "fields": [
    {
      "name": "unionOfRecords",
      "type": ["null", {
        "namespace": "org.apache.avro.codegentest.testdata",
        "name": "RecordInUnion",
        "type": "record",
        "fields": [
          {
            "name": "nullableDateField",
            "type": ["null", {"type": "int", "logicalType": "date"}]
          }
        ]
      }]
    }]
}