@ApiStatus.Internal
    public @Nullable FileEditorManagerImpl.OpenMode getOpenMode() {
      if (myNavigationState instanceof FileEditorStateWithPreferredOpenMode) {
        return ((FileEditorStateWithPreferredOpenMode)myNavigationState).getOpenMode();
      }
      return null;
    }
@ApiStatus.Internal
    public @Nullable FileEditorManagerImpl.OpenMode getOpenMode()