code: function() {
                  var deferred = $q.defer();
  
                  this.isAvailable().then(function() {
                      window.ThreeDeeTouch.enableLinkPreview();
                          deferred.resolve(true);
                  },
                  function(err) {
                      deferred.reject(err);
                  });
  
                  return deferred.promise;
              }
docs: /*
  Enable link preview popup when force touch is appled to link elements
  
  @return   bool