plugin: ansible.builtin.constructed
keyed_groups:
  - key: hostvar0
  - key: hostvar1
  - key: hostvar2

  - key: hostvar0
    separator: 'separator'
  - key: hostvar1
    separator: 'separator'
  - key: hostvar2
    separator: 'separator'

  - key: hostvar0
    prefix: 'prefix'
  - key: hostvar1
    prefix: 'prefix'
  - key: hostvar2
    prefix: 'prefix'