My call to navigationService.syncTree isn't being called. If I put a console.info on syncArgs it never reaches it...

featuresResource.save($scope.feature).then(function (response) {

            $scope.loaded = true;
            $scope.featuresForm.$setPristine();
            $scope.feature = response.data;

            //$scope.featuresForm.$dirty = false;
            navigationService.syncTree({ tree: "Features", path: ["-1", "Features", $scope.feature.id], forceReload: true })
                .then(function (syncArgs) { console.info(syncArgs); }); .....

This example follows working code in the umbraco.controllers.js so I'm not sure why I can't see the promise ever being executed.