code: def GetSubList(self):
      if not self.cl:
          return []
      sublist = []
      for name in self.listmethods():
          item = MethodBrowserTreeItem(name, self.cl, self.file)
          sublist.append(item)
      return sublist
  
imports: import os
  import sys
  import pyclbr
  from idlelib import PyShell
  from idlelib.WindowList import ListedToplevel
  from idlelib.TreeWidget import TreeNode, TreeItem, ScrolledCanvas
  from idlelib.configHandler import idleConf
label_desc: Use image node_id 5 for calling the ClassBrowserTreeItem obj's underlying member method code with example usage: obj.GetSubList() and returns: sublist, list