@type t() :: %Docspring.Model.HtmlTemplateData{
  allow_additional_properties: boolean(),
  description: String.t(),
  editable_submissions: boolean(),
  expiration_interval: String.t(),
  expire_after: float(),
  expire_submissions: boolean(),
  footer_html: String.t(),
  header_html: String.t(),
  html: String.t(),
  name: String.t(),
  public_submissions: boolean(),
  public_web_form: boolean(),
  redirect_url: String.t(),
  scss: String.t(),
  slack_webhook_url: String.t(),
  template_type: String.t(),
  webhook_url: String.t()
}