docs: function $SanitizeProvider() {
    var svgEnabled = false;
  
    this.$get = ['$$sanitizeUri', function($$sanitizeUri) {
      if (svgEnabled) {
        angular.extend(validElements, svgElements);
      }
      return function(html) {
        var buf = [];
        htmlParser(html, htmlSanitizeWriter(buf, function(uri, isImage) {
          return !/^unsafe:/.test($$sanitizeUri(uri, isImage));
        }));
        return buf.join('');
      };
    }];
  
  
    /**
     * @ngdoc method
     * @name $sanitizeProvider#enableSvg
     * @kind function
     *
     * @description
     * Enables a subset of svg to be supported by the sanitizer.
     *
     * <div class="alert alert-warning">
     *   <p>By enabling this setting without taking other precautions, you might expose your
     *   application to click-hijacking attacks. In these attacks, sanitized svg elements could be positioned
     *   outside of the containing element and be rendered over other elements on the page (e.g. a login
     *   link). Such behavior can then result in phishing incidents.</p>
     *
     *   <p>To protect against these, explicitly setup `overflow: hidden` css rule for all potential svg
     *   tags within the sanitized content:</p>
     *
     *   <br>
     *
     *   <pre><code>
     *   .rootOfTheIncludedContent svg {
     *     overflow: hidden !important;
     *   }
     *   </code></pre>
     * </div>
     *
     * @param {boolean=} regexp New regexp to whitelist urls with.
     * @returns {boolean|ng.$sanitizeProvider} Returns the currently configured value if called
     *    without an argument or self for chaining otherwise.
     */
    this.enableSvg = function(enableSvg) {
      if (angular.isDefined(enableSvg)) {
        svgEnabled = enableSvg;
        return this;
      } else {
        return svgEnabled;
      }
    };
  }