renderSafeHtml(template, templateData = undefined) {
    const result = this.renderStrict(template, templateData);
    // Convert from SanitizedHtml to SafeHtml.
    return result.toSafeHtml();
  }
Renders a strict Soy template of kind="html" and returns the result as
a SafeHtml object.
Rendering a template that is not a strict template of kind="html" results
in a runtime error.
@param {function(ARG_TYPES, ?Object<string, *>=):
    !SanitizedHtml} template The Soy template to render.
@param {ARG_TYPES=} templateData The data for the template.
@return {!SafeHtml}
@template ARG_TYPES