docs: public void setDialogTitle(String singleKey, String multiKey) {
  
          if (isMultiOperation()) {
              // generate title with number of selected resources and parent folder parameters
              String resCount = String.valueOf(getResourceList().size());
              String currentFolder = CmsResource.getFolderPath(getSettings().getExplorerResource());
              currentFolder = CmsStringUtil.formatResourceName(currentFolder, 40);
              Object[] params = new Object[] {resCount, currentFolder};
              setParamTitle(key(multiKey, params));
          } else {
              // generate title using the resource name as parameter for the key
              String resourceName = CmsStringUtil.formatResourceName(getParamResource(), 50);
              setParamTitle(key(singleKey, new Object[] {resourceName}));
          }
      }