lang/java/avro/src/test/resources/schema-location.json

{
  "type": "record",
  "name": "r7",
  "fields": [{
    "name": "lat",
    "type": "float",
    "field-id": 1
  }, {
    "name": "long",
    "type": ["null", "float"],
    "default": null,
    "field-id": 2
  }]
}