
     * by the 1.x Templatizer API due to changes in the `TemplateInstance` API
     * between versions 1.x and 2.x.
     *
     * @polymerBehavior
     * @memberof Polymer
     */
    let Templatizer = {

      /**
       * Generates an anonymous `TemplateInstance` class (stored as `this.ctor`)
       * for the provided template.  This method should be called once per
       * template to prepare an element for stamping the template, followed
       * by `stamp` to create new instances of the template.
   