@SuppressWarnings("unchecked")
  private static @NotNull PersistentStateComponent<ManagerState> getComponent(@NotNull Project project) {
    return (PersistentStateComponent<ManagerState>)requireNonNull(BookmarksManager.getInstance(project));
  }
@SuppressWarnings("unchecked")
  private static @NotNull PersistentStateComponent<ManagerState> getComponent(@NotNull Project project)