public void setCompactedDirNode(final DirectoryNode compactedDirNode) {
    if (myCompactedDirNode != null) {
      myCompactedDirNode.myWrapper = null;
    }
    myCompactedDirNode = compactedDirNode;
    if (myCompactedDirNode != null) {
      myCompactedDirNode.myWrapper = this;
    }
  }
public void setCompactedDirNode(final DirectoryNode compactedDirNode)