{
  "empty": "{}",
  "first-last": "{\"firstname\": \"John\", \"lastname\": \"Smith\"}",
  "first-middle-last": "{\"firstname\": \"John\", \"middlename\": \"Q\", \"lastname\": \"Smith\"}",
  "first": "{\"firstname\": \"John\"}",
  "first-last-unknown": "{\"firstname\": \"John\", \"lastname\": \"Smith\", \"unknown\": \"x\"}",
  "first-last-null": "{\"firstname\": \"John\", \"lastname\": null }",
  "unknown": "{\"unknown\": \"x\"}"
}