code: function (page) {
              scope.tree.expanded[page._id] = true;
              page = scope.tree.getByPath(page.path, page._id);
              if (page) {
                  page.open = true;
                  scope.tree.forEachParentByPath(page.path, page._id, function (parent) {
                      scope.tree.expanded[parent._id] = true;
                      if (!parent.open) parent.open = true;
                  });
              }
          }
docs: Expand given root by expanding all parent nodes *