docs: @SuppressWarnings("WeakerAccess")
      @UiThread
      public boolean popToTag(@NonNull String tag, @Nullable ControllerChangeHandler changeHandler) {
          ThreadUtils.ensureMainThread();
  
          for (RouterTransaction transaction : backstack) {
              if (tag.equals(transaction.tag())) {
                  popToTransaction(transaction, changeHandler);
                  return true;
              }
          }
          return false;
      }