private static @NotNull TreePath normalize(@NotNull TreePath path, int minCount, int keepSelectionLevel) {
    if (keepSelectionLevel < 0) return path;
    if (keepSelectionLevel > minCount) minCount = keepSelectionLevel;
    int pathCount = path.getPathCount();
    while (minCount < pathCount--) path = path.getParentPath();
    assert path != null : "unexpected minCount: " + minCount;
    return path;
  }
private static @NotNull TreePath normalize(@NotNull TreePath path, int minCount, int keepSelectionLevel)