@Override
  public void registerFileSets(@NotNull ScratchRootsEntity entity,
                               @NotNull WorkspaceFileSetRegistrar registrar,
                               @NotNull EntityStorage storage) {
    for (VirtualFileUrl root : entity.getRoots()) {
      registrar.registerFileSet(root, WorkspaceFileKind.CUSTOM, entity, null);
    }
  }
@Override
  public void registerFileSets(@NotNull ScratchRootsEntity entity,
                               @NotNull WorkspaceFileSetRegistrar registrar,
                               @NotNull EntityStorage storage)