code: def is_group(self, config_path: str) -> bool:
      groups = {
          "",
          "dataset",
          "optimizer",
          "level1",
          "level1/level2",
          "configs_with_defaults_list",
      }
      return config_path in groups
  
file_path: hydra/examples/plugins/example_configsource_plugin/hydra_plugins/example_configsource_plugin/example_configsource_plugin.py
imports: from typing import Any, Dict, List, Optional
  from hydra.core.object_type import ObjectType
  from hydra.plugins.config_source import ConfigLoadError, ConfigResult, ConfigSource
  from omegaconf import OmegaConf
label_desc: Use image node_id 5 for calling the ConfigSourceExample obj's underlying member method code with example usage: obj.is_group(config_path) and returns: unknown