public void ascendTree(){
  if (null != parentPath) {
    parentPath.append(PARENT_PATH);
    return;
  }
  File parentTree=calcParentTree();
  if (null != parentTree) {
    treeFile=parentTree;
    return;
  }
  parentPath=new StringBuilder(provideLastName());
  parentPath.append(PARENT_PATH);
}

public void ascendTree ( ) { if ( null != parentPath ) { parentPath . append ( PARENT_PATH ) ; return ; } File parentTree = calcParentTree ( ) ; if ( null != parentTree ) { treeFile = parentTree ; return ; } parentPath = new StringBuilder ( provideLastName ( ) ) ; parentPath . append ( PARENT_PATH ) ; }
move higher in the tree , beyond even an apparent root of tree .
