code: def scheme() -> str:
      return "example"
  
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 2 for calling the ConfigSourceExample obj's underlying member method code with example usage: obj.scheme() and returns: str