code: function getHelper() {
      let helper;
  
      if (editor.isViewer()) {
        helper = vmh;
      } else if (editor.isWysiwygMode()) {
        helper = wmh;
      } else {
        helper = mmh;
      }
  
      return helper;
    }
docs: getHelper
  Get helper for current situation
  @returns {object} helper