code: function(
        element, template, opt_templateData, opt_injectedData) {
      element.innerHTML = template(opt_templateData, null, opt_injectedData);
    }
docs: Helper function to render a Soy template and then set the output string as
  the innerHTML of an element. It is recommended to use this helper function
  instead of directly setting innerHTML in your hand-written code, so that it
  will be easier to audit the code for cross-site scripting vulnerabilities.
  
  NOTE: New code should consider using goog.soy.renderElement instead.
  
  @param {Element} element The element whose content we are rendering.
  @param {Function} template The Soy template defining the element's content.
  @param {Object=} opt_templateData The data for the template.
  @param {Object=} opt_injectedData The injected data for the template.