docs: @Override
      public IEntityGroupStore newGroupStore(ComponentGroupServiceDescriptor svcDescriptor)
              throws GroupsException {
          FileSystemGroupStore fsGroupStore = (FileSystemGroupStore) getGroupStore();
          String groupsRoot = (String) svcDescriptor.get("groupsRoot");
          if (groupsRoot != null) {
              fsGroupStore.setGroupsRootPath(groupsRoot);
          }
          return fsGroupStore;
      }