No detach method in Drupal.behaviors.ckeditor

In our application we are loading a ckeditor-enabled #text_format field with ajax. However, the Drupal.behaviors.ckeditor behavior has no detach method, causing some errors in the vain of "i.contentWindow is not defined' when subsequently reloading the field with the same id.

I added this detach method, which seems to solve the issues we encountered so far:

detach:
        function (context) {
          $("textarea.ckeditor-mod.ckeditor-processed").each(function () {
            var ta_id=$(this).attr("id");
            Drupal.ckeditorOff(ta_id);
          }).removeClass('ckeditor-processed');
        }