{{yield (hash
  col1=(component 'nypr-o-block-list-group/column'
    class='c-block-group__col1'
    onRender=(action addColumn)
    onDestroy=(action removeColumn)
  )
  col2=(component 'nypr-o-block-list-group/column'
    class='c-block-group__col2'
    onRender=(action addColumn)
    onDestroy=(action removeColumn)
  )
)}}