How can I override 'tplImagePopover' or 'tplPopovers'?

define([
  'summernote/core/agent',
  'summernote/core/dom',
  'summernote/core/func',
  'summernote/core/list'
], function (agent, dom, func, list) {
  /**
   * @class Renderer
   *
   * renderer
   *
   * rendering toolbar and editable
   */
  var Renderer = function (){
    ...
var tplPopovers = function (lang, options) {
...
var tplImagePopover = function () {
...
}
...
}
return Renderer;
});