code: public static Treenode search(Treenode start, String text, ITreenodeSearch search) {
          return search(start.getTreeview(), text, search);
      }
docs: Search the tree for a tree item whose label contains the specified text.
  
  @param start Tree item to start search.
  @param text Text to find.
  @param search Search logic.
  @return The first matching tree item after the starting item, or null if none found.