code: def GetSubList(self):
      sublist = []
      for info in self.stack:
          item = FrameTreeItem(info, self.flist)
          sublist.append(item)
      return sublist
  
imports: import linecache
  import os
  import tkinter
  from idlelib.debugobj import ObjectTreeItem, make_objecttreeitem
  from idlelib.tree import TreeNode, TreeItem, ScrolledCanvas
label_desc: Use image node_id 4 for calling the StackTreeItem obj's underlying member method code with example usage: obj.GetSubList() and returns: sublist