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 right_menu(self, evt):
      menu = wx.Menu()
      sel_all = wx.MenuItem(menu, wx.NewId(), "Select All")
      sel_none = wx.MenuItem(menu, wx.NewId(), "Select None")
      force_refresh = wx.MenuItem(menu, wx.NewId(), "Refresh List")
      menu.Append(sel_all)
      menu.Append(sel_none)
      menu.Append(force_refresh)
      menu.Bind(wx.EVT_MENU, self.select_all, sel_all)
      menu.Bind(wx.EVT_MENU, self.select_none, sel_none)
      menu.Bind(wx.EVT_MENU, self.force_refresh, force_refresh)
      self.PopupMenu(menu)
      menu.Destroy()
  
imports: import platform
  import wx
label_desc: Use image node_id 3 for calling the NameSubscriberListBox obj's underlying member method code with example usage: obj.right_menu(evt) without return types