gistfile1.yml

'Foo.Bar:Box':
  superTypes: ['TYPO3.Neos:Content']
  abstract: FALSE
  childNodes:
    boxcontent:
      type: 'TYPO3.Neos:ContentCollection'
  ui:
    group: 'structure'
    label: 'Content Box'
    icon: 'icon-columns'
    inlineEditable: TRUE
    inspector:
      groups:
        layout:
          label: 'Layout'
          position: 10
  properties:
    marginAfter:
      type: string
      defaultValue: ''
      ui:
        reloadIfChanged: TRUE
        label: 'Margin After'
        inspector:
          group: 'layout'
          editor: 'TYPO3.Neos/Inspector/Editors/SelectBoxEditor'
          editorOptions:
            values:
              '':
                label: 'Standard'
              'half-margin':
                label: 'Half Margin'
              'no-margin':
                label: 'No Margin'