code: function () {
          var me = this;
          this.googleListeners.push(google.maps.event.addListenerOnce(this.layer.mapObject, 'idle', function () {
              me.onGoogleIdle();
          }));
          // force simulation of panning for trigger idle event 
          this.layer.mapObject.panBy(0, 1);
          this.layer.mapObject.panBy(0, -1);
      }
docs: private