def toggle_show_variable_identifier(self, show_ident: bool | None = None) -> None:
        """
        Toggle whether variable identifiers are shown on disassembly graph.
        """
        if show_ident is None:
            show_ident = not self._show_variable_ident
        self._show_variable_ident = show_ident
        self._current_view.refresh()

        Toggle whether variable identifiers are shown on disassembly graph.
        
angrmanagement/ui/views/disassembly_view.py