class_docstr: A list of checkboxes with extra annotation, and a context menu.
  
  Designed as an alternative to NameSubscriberCombobox which simplifies selection of
  multiple items.
code: def choice_made(self, evt):
      # Prevent selection of duplicate entires, marked with "Duplicate ___ Name!"
      if self.list_dlg.GetItems()[evt.Selection].endswith("Name!)"):
          if self.list_dlg.IsChecked(evt.Selection):
              self.list_dlg.Check(evt.Selection, False)
          return
      for cb in self.callbacks:
          cb(evt)
      self.Refresh()
      self.checked = self.GetChecked()
  
imports: import platform
  import wx
label_desc: Use image node_id 8 for calling the NameSubscriberListBox obj's underlying member method code with example usage: obj.choice_made(evt) without return types