docstr: Create formatted string of modifiers plus the key.
docstr_tok: ["Create","formatted","string","of","modifiers","plus","the","key","."]
code: def build_key_string(self):
      "Create formatted string of modifiers plus the key."
      keylist = modifiers = self.get_modifiers()
      final_key = self.list_keys_final.get("anchor")
      if final_key:
          final_key = translate_key(final_key, modifiers)
          keylist.append(final_key)
      self.key_string.set(f"<{'-'.join(keylist)}>")
  
imports: from tkinter import Toplevel, Listbox, StringVar, TclError
  from tkinter.ttk import Frame, Button, Checkbutton, Entry, Label, Scrollbar
  from tkinter import messagebox
  from tkinter.simpledialog import _setup_dialog
  import string
  import sys
label_desc: Use image node_id 7 for calling the GetKeysFrame obj's underlying member method code with example usage: obj.build_key_string() without return types