code: def global_setting(self):
      return self._global_settings["global_setting"]
  
file_path: altair/tests/utils/test_plugin_registry.py
imports: from altair.utils.plugin_registry import PluginRegistry
  from typing import Callable
label_desc: Use image node_id 1 for calling the GeneralCallableRegistry obj's underlying member method code with example usage: obj.global_setting() and returns: self