freemarker-generator-cli/site/sample/yaml/customer.yaml

firstName: "John"
lastName: "Doe"
age: 31
contactDetails:
  - type: "mobile"
    number: 123456789
  - type: "landline"
    number: 456786868
homeAddress:
  line: "Xyz, DEF Street"
  city: "City Y"
  state: "State Y"
  zip: 345657