@type attrs() ::
  %{
    optional(:issued_by) => SEO.JSONLD.Organization.t() | map(),
    optional(:issued_through) => SEO.JSONLD.Service.t() | map(),
    optional(:permit_audience) => SEO.JSONLD.Audience.t() | map(),
    optional(:valid_for) => Duration.t() | String.t(),
    optional(:valid_from) =>
      DateTime.t() | NaiveDateTime.t() | String.t() | Date.t(),
    optional(:valid_in) => SEO.JSONLD.AdministrativeArea.t() | map(),
    optional(:valid_until) => Date.t() | String.t(),
    optional(:additional_type) => String.t() | URI.t(),
    optional(:alternate_name) => String.t(),
    optional(:description) => SEO.JSONLD.TextObject.t() | map() | String.t(),
    optional(:disambiguating_description) => String.t(),
    optional(:identifier) =>
      String.t() | URI.t() | SEO.JSONLD.PropertyValue.t() | map(),
    optional(:image) =>
      URI.t() | String.t() | SEO.JSONLD.ImageObject.t() | map(),
    optional(:main_entity_of_page) =>
      SEO.JSONLD.CreativeWork.t() | map() | URI.t() | String.t(),
    optional(:name) => String.t(),
    optional(:owner) =>
      SEO.JSONLD.Organization.t() | map() | SEO.JSONLD.Person.t(),
    optional(:potential_action) => SEO.JSONLD.Action.t() | map(),
    optional(:same_as) => URI.t() | String.t(),
    optional(:subject_of) =>
      SEO.JSONLD.Event.t() | map() | SEO.JSONLD.CreativeWork.t(),
    optional(:url) => URI.t() | String.t()
  }
  | [
      issued_by: SEO.JSONLD.Organization.t() | map(),
      issued_through: SEO.JSONLD.Service.t() | map(),
      permit_audience: SEO.JSONLD.Audience.t() | map(),
      valid_for: Duration.t() | String.t(),
      valid_from: DateTime.t() | NaiveDateTime.t() | String.t() | Date.t(),
      valid_in: SEO.JSONLD.AdministrativeArea.t() | map(),
      valid_until: Date.t() | String.t(),
      additional_type: String.t() | URI.t(),
      alternate_name: String.t(),
      description: SEO.JSONLD.TextObject.t() | map() | String.t(),
      disambiguating_description: String.t(),
      identifier: String.t() | URI.t() | SEO.JSONLD.PropertyValue.t() | map(),
      image: URI.t() | String.t() | SEO.JSONLD.ImageObject.t() | map(),
      main_entity_of_page:
        SEO.JSONLD.CreativeWork.t() | map() | URI.t() | String.t(),
      name: String.t(),
      owner: SEO.JSONLD.Organization.t() | map() | SEO.JSONLD.Person.t(),
      potential_action: SEO.JSONLD.Action.t() | map(),
      same_as: URI.t() | String.t(),
      subject_of: SEO.JSONLD.Event.t() | map() | SEO.JSONLD.CreativeWork.t(),
      url: URI.t() | String.t()
    ]

@type t() :: %{required(String.t()) => term()}