function UnlinkRequest ({
  custom,
  device,
  facebook,
  google,
  email
} = {}) {
    function build_ () {
      if (custom) return { link: { custom } } // Should return { unlink: { custom } } instead
      if (device) return { link: { device } } // Should return { unlink: { device } } instead
      if (facebook) return { link: { facebook } } // Should return { unlink: { facebook } } instead
      if (google) return { link: { google } } // Should return { unlink: { google } } instead
      if (email) return { link: { email } } // Should return { unlink: { email } } instead
    }

    return {
      get custom () {
        return custom
      },
      set custom (val) {
        custom = val
      },

      get device () {
        return device
      },
      set device (val) {
        device = val
      },

      get facebook () {
        return facebook
      },
      set facebook (val) {
        facebook = val
      },

      get google () {
        return google
      },
      set google (val) {
        google = val
      },

      get email () {
        return email
      },
      set email (val) {
        email = val
      },

      build_
    }
  }