---
elements:
    - type: Checkboxgroup
      name: foo
      options:
        - value: 1
          label: 'First'
          attributes:
            myattr: 'escape&attr'
          label_attributes:
            myattr: 'escape&label'
          container_attributes:
            myattr: 'escape&container'
        
        - value: 2
          label: 'Second'
          attributes_xml:
            myattr: 'noescape&'