docs: function (cb) {
  
                  // check if we need to render the filters
                  if (!Object.keys(req.linz.model.list.filters).length) {
                      return cb(null);
                  }
  
                  formtoolsAPI.list.renderFilters(req, req.params.model, function (err, result) {
  
                      if (err) {
                          return cb(err);
                      }
  
                      req.linz.model.list.filters = result;
  
                      return cb(null);
                  });
  
              }