Article:
  actAs:
    SoftDelete:
    Timestampable:
    I18n:
      fields: [title, content]
      actAs:
        Sluggable:
          unique:      true
          fields:      [title]
          canUpdate:   true
          uniqueIndex: true
  columns:
    title: string(255)
    summary: string
    content: string

Comment:
  actAs:
    SoftDelete:
    Timestampable:
  columns:
    user_id: string(255)
    content: string