setting an attribute idempotent.

      In particular, what this means is that if you get an `<input>` element's
      `value` attribute and then re-render the template with the same value,
      it will avoid clobbering the cursor and selection position.
      Since most attribute sets are idempotent in the browser, you typically
      can get away with reading attributes using jQuery, but the most reliable
      way to do so is through this method.
      @method readDOMAttr

      @param {String} name the name of the attribute
      @return String
      @public
     */
    readDOMAttr(name: string) {
      let element = getViewElement(this);
      return readDOMAttr(element, name);
    },

    /**
     The WAI-ARIA role of the control represented by this view. For example, a
     button may have a role of type 'button', or a pane may have a role of
     type 'alertdialog'. This property is used by assistive software to help
     visually challenged users navigate rich web applications.

     The full list of valid WAI-ARIA roles is available at:
     [http://www.w3.org/TR/wai-aria/roles#roles_categorization](http://www.w3.org/TR/wai-aria/roles#roles_categorization)

     @property ariaRole
     @type String
     @default null

      In particular, what this means is that if you get an `<input>` element's
      `value` attribute and then re-render the template with the same value,
      it will avoid clobbering the cursor and selection position.
      Since most attribute sets are idempotent in the browser, you typically
      can get away with reading attributes using jQuery, but the most reliable
      way to do so is through this method.
      @method readDOMAttr

      @param {String} name the name of the attribute
      @return String
      @public
     */
    readDOMAttr(name: string) {
      // TODO revisit this
      let element = getViewElement(this) as HTMLElement;
      let isSVG = element.namespaceURI === SVG_NAMESPACE;
      let { type, normalized } = normalizeProperty(element, name);

      if (isSVG) {
        return element.getAttribute(normalized);
      }

      if (type === 'attr') {
        return element.getAttribute(normalized);
      }
      return element[normalized];
    },

    /**
     The WAI-ARIA role of the control represented by this view. For example, a

 getElement(view: Opaque): Simple.Element | undefined {
   return getViewElement(view);
 }