docs: function () {
              var jquery_on = $.fn.on, jquery_off = $.fn.off;
              var custom_on = function (types, selector, data, fn, /*INTERNAL*/ one) {
                  if (typeof types === "string") {
                      types = types.replace(/vclick/g, "click");
                  }
                  return _.bind(jquery_on, this)(types, selector, data, fn, one);
              };
              var custom_off = function (types, selector, fn) {
                  if (typeof types === "string") {
                      types = types.replace(/vclick/g, "click");
                  }
                  return _.bind(jquery_off, this)(types, selector, fn);
              };
              // replace functions.
              $.fn.on = custom_on;
              $.fn.off = custom_off;
          }