code: function _deliverAllChangeRecords() {
          var observers = observerCallbacks.slice();
          var anyWorkDone = false;
          for (var i = 0, l = observers.length; i < l; i++) {
              var observer = observers[i];
              if (_deliverChangeRecords(observer)) {
                  anyWorkDone = true;
              }
          }
          return anyWorkDone;
      }
docs: Implementation of the internal algorithm 'DeliverAllChangeRecords' described in the proposal. [Corresponding Section in ECMAScript wiki](http://wiki.ecmascript.org/doku.php?id=harmony:observe_internals#deliverallchangerecords)