/** Can this user see this project exists? */
  public boolean isVisible() {
    if (user instanceof InternalUser && !isHidden()) {
      return true;
    }

    if (!canPerformOnAnyRef(Permission.READ) || isHidden()) {
      return false;
    }

    Project p = state.getProject();
    for (ProjectFilter e : visibilityExtensions) {
      if (!e.accept(p)) {
        return false;
      }
    }
    return true;
  }

  /**
   * An extension to the standard project visibility check
   */
  public interface ProjectFilter {
    public boolean accept(Project project);
  }

  class TenantAsTopLevelFolder implements ProjectFilter {
    private final Provider<CurrentUser> currentUser;
    private final DomainDbClient checker;

    @Inject
    public TenantAsTopLevelFolder(Provider<CurrentUser> currentUser,
        DomainDbClient checker) {
      this.currentUser = currentUser;
      this.checker = checker;
    }

    @Override
    public boolean accept(Project project) {
      if (currentUser.get().getCapabilities().canAdministrateServer()) {
        return true;
      }

      String projectName = project.getName();
      int n = projectName.indexOf('/');
      if (n == -1) {
        return false;
      }
      String tenant = projectName.substring(0, n);
      String userName = currentUser.get().getUserName();
      return checker.hasGitAccess(userName, tenant);
     }
  }