"TREENODE_LEVEL"
"L"
  public String makeTreeNodeId(int level, TreeNode parent, int siblingNumber)  {    return    	"TREENODE_LEVEL"       + Constants.DELIMITER      + level      + Constants.DELIMITER      + "PARENTNODEID"      + Constants.DELIMITER      + "["      + (parent == null ? "NOPARENTID" : parent.getId())      + "]"      + Constants.DELIMITER      + "SIBLINGNUMBER"      + Constants.DELIMITER      + siblingNumber      + Constants.DELIMITER      + "ID";  }