code: def close_display(self):
          
          if hasattr(self, "_keyboard_description") and self._keyboard_description:
              names_mask = XkbSymbolsNameMask | XkbGroupNamesMask
              XkbFreeNames(self._keyboard_description, names_mask, True)
              XkbFreeControls(self._keyboard_description, XkbAllControlsMask, True)
              XkbFreeClientMap(self._keyboard_description, 0, True)
              del self._keyboard_description
  
          if hasattr(self, "_display") and self._display:
              XCloseDisplay(self._display)
              del self._display
docs: Closes connection with X server and cleans up objects
          created on open_display().